diff --git a/backend/src/main/java/com/yfd/platform/qgc_base/domain/SdAddvcdDic.java b/backend/src/main/java/com/yfd/platform/qgc_base/domain/SdAddvcdDic.java
index 69223c3e..813addef 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_base/domain/SdAddvcdDic.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_base/domain/SdAddvcdDic.java
@@ -7,6 +7,7 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 
 import java.io.Serializable;
+import java.math.BigDecimal;
 
 /**
  * <p>
@@ -54,12 +55,12 @@ public class SdAddvcdDic implements Serializable {
     /**
      * 中心经度
      */
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     /**
      * 中心纬度
      */
-    private Double lttd;
+    private BigDecimal lttd;
 
     /**
      * 面积
diff --git a/backend/src/main/java/com/yfd/platform/qgc_base/domain/SdEngInfoBH.java b/backend/src/main/java/com/yfd/platform/qgc_base/domain/SdEngInfoBH.java
index a34a36ae..464ddc2f 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_base/domain/SdEngInfoBH.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_base/domain/SdEngInfoBH.java
@@ -6,6 +6,7 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 
 import java.io.Serializable;
+import java.math.BigDecimal;
 import java.util.Date;
 
 /**
@@ -48,12 +49,12 @@ public class SdEngInfoBH implements Serializable {
     /**
      * 位置经度。单位：(°)
      */
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     /**
      * 位置纬度。单位：(°)
      */
-    private Double lttd;
+    private BigDecimal lttd;
 
     /**
      * 高程。单位：m
diff --git a/backend/src/main/java/com/yfd/platform/qgc_base/domain/SdRvcdDic.java b/backend/src/main/java/com/yfd/platform/qgc_base/domain/SdRvcdDic.java
index 53178c88..4ceb5cb2 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_base/domain/SdRvcdDic.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_base/domain/SdRvcdDic.java
@@ -5,6 +5,7 @@ import lombok.Data;
 import lombok.EqualsAndHashCode;
 
 import java.io.Serializable;
+import java.math.BigDecimal;
 import java.util.Date;
 import java.util.List;
 
@@ -54,12 +55,12 @@ public class SdRvcdDic implements Serializable {
     /**
      * 经度
      */
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     /**
      * 纬度
      */
-    private Double lttd;
+    private BigDecimal lttd;
 
     /**
      * 面积
diff --git a/backend/src/main/java/com/yfd/platform/qgc_base/domain/vo/EngRsvrcscdBVo.java b/backend/src/main/java/com/yfd/platform/qgc_base/domain/vo/EngRsvrcscdBVo.java
index 4ccc4736..ca7f29c1 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_base/domain/vo/EngRsvrcscdBVo.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_base/domain/vo/EngRsvrcscdBVo.java
@@ -2,6 +2,7 @@ package com.yfd.platform.qgc_base.domain.vo;
 
 import lombok.Data;
 
+import java.math.BigDecimal;
 import java.util.Date;
 
 @Data
@@ -35,9 +36,9 @@ public class EngRsvrcscdBVo {
 
     private Integer isDeleted;
 
-    private Double lgtd;
+    private BigDecimal lgtd;
 
-    private Double lttd;
+    private BigDecimal lttd;
 
     private String stlc;
 }
\ No newline at end of file
diff --git a/backend/src/main/java/com/yfd/platform/qgc_base/domain/vo/EngVmsstbprptVo.java b/backend/src/main/java/com/yfd/platform/qgc_base/domain/vo/EngVmsstbprptVo.java
index 28c657ee..0554dae5 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_base/domain/vo/EngVmsstbprptVo.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_base/domain/vo/EngVmsstbprptVo.java
@@ -4,6 +4,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
 import java.io.Serializable;
+import java.math.BigDecimal;
 import java.util.Date;
 
 @Data
@@ -32,8 +33,8 @@ public class EngVmsstbprptVo implements Serializable {
     private String hycd;
     private String topHycd;
     private String stlc;
-    private Double lgtd;
-    private Double lttd;
+    private BigDecimal lgtd;
+    private BigDecimal lttd;
     private Date jcdt;
     private Date piodt;
     private Date aiodt;
diff --git a/backend/src/main/java/com/yfd/platform/qgc_data/domain/vo/FishDraftDataVO.java b/backend/src/main/java/com/yfd/platform/qgc_data/domain/vo/FishDraftDataVO.java
index b87da039..69a378d2 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_data/domain/vo/FishDraftDataVO.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_data/domain/vo/FishDraftDataVO.java
@@ -210,12 +210,12 @@ public class FishDraftDataVO implements Serializable {
     /**
      * 电站经度（电站表）
      */
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     /**
      * 电站纬度（电站表）
      */
-    private Double lttd;
+    private BigDecimal lttd;
 
     /**
      * 排序字段
diff --git a/backend/src/main/java/com/yfd/platform/qgc_eng/eq/entity/vo/EngEqBaseMsstbprptVo.java b/backend/src/main/java/com/yfd/platform/qgc_eng/eq/entity/vo/EngEqBaseMsstbprptVo.java
index e90510ac..f998dd54 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_eng/eq/entity/vo/EngEqBaseMsstbprptVo.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_eng/eq/entity/vo/EngEqBaseMsstbprptVo.java
@@ -4,6 +4,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
 import java.io.Serializable;
+import java.math.BigDecimal;
 import java.util.Date;
 
 @Data
@@ -46,10 +47,10 @@ public class EngEqBaseMsstbprptVo implements Serializable {
     private String stlc;
 
     @Schema(description = "经度")
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     @Schema(description = "纬度")
-    private Double lttd;
+    private BigDecimal lttd;
 
     @Schema(description = "高程")
     private Double elev;
diff --git a/backend/src/main/java/com/yfd/platform/qgc_env/fh/entity/vo/FhBaseInfoVo.java b/backend/src/main/java/com/yfd/platform/qgc_env/fh/entity/vo/FhBaseInfoVo.java
index 93105dc0..e10c44cd 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_env/fh/entity/vo/FhBaseInfoVo.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_env/fh/entity/vo/FhBaseInfoVo.java
@@ -23,10 +23,10 @@ public class FhBaseInfoVo {
     private Integer blprd;
 
     @Schema(description = "经度")
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     @Schema(description = "纬度")
-    private Double lttd;
+    private BigDecimal lttd;
 
     @Schema(description = "高程")
     private Double elev;
diff --git a/backend/src/main/java/com/yfd/platform/qgc_env/fpr/entity/vo/FprMsstbprptVo.java b/backend/src/main/java/com/yfd/platform/qgc_env/fpr/entity/vo/FprMsstbprptVo.java
index 3482b334..be4a6d52 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_env/fpr/entity/vo/FprMsstbprptVo.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_env/fpr/entity/vo/FprMsstbprptVo.java
@@ -3,6 +3,7 @@ package com.yfd.platform.qgc_env.fpr.entity.vo;
 import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
+import java.math.BigDecimal;
 import java.util.Date;
 
 @Data
@@ -40,10 +41,10 @@ public class FprMsstbprptVo {
     private Date tm;
 
     @Schema(description = "经度")
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     @Schema(description = "纬度")
-    private Double lttd;
+    private BigDecimal lttd;
 
     @Schema(description = "高程")
     private Double elev;
diff --git a/backend/src/main/java/com/yfd/platform/qgc_env/fpr/entity/vo/FprdPointInfoVo.java b/backend/src/main/java/com/yfd/platform/qgc_env/fpr/entity/vo/FprdPointInfoVo.java
index 81ea189f..6ac7036b 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_env/fpr/entity/vo/FprdPointInfoVo.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_env/fpr/entity/vo/FprdPointInfoVo.java
@@ -2,6 +2,8 @@ package com.yfd.platform.qgc_env.fpr.entity.vo;
 
 import lombok.Data;
 
+import java.math.BigDecimal;
+
 @Data
 public class FprdPointInfoVo {
 
@@ -15,9 +17,9 @@ public class FprdPointInfoVo {
 
     private String bldstt;
 
-    private Double lttd;
+    private BigDecimal lttd;
 
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     private Double dtmel;
 
diff --git a/backend/src/main/java/com/yfd/platform/qgc_env/fpr/service/impl/FprMonitorServiceImpl.java b/backend/src/main/java/com/yfd/platform/qgc_env/fpr/service/impl/FprMonitorServiceImpl.java
index 6a55e3c3..30bbd928 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_env/fpr/service/impl/FprMonitorServiceImpl.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_env/fpr/service/impl/FprMonitorServiceImpl.java
@@ -216,8 +216,8 @@ public class FprMonitorServiceImpl implements FprMonitorService {
 
         SiteAvoidanceUtils.calcSiteMapLev(resultList,
                 FprdPointInfoVo::getStcd,
-                vo -> vo.getLgtd() != null ? java.math.BigDecimal.valueOf(vo.getLgtd()) : null,
-                vo -> vo.getLttd() != null ? java.math.BigDecimal.valueOf(vo.getLttd()) : null,
+                vo -> vo.getLgtd() != null ? vo.getLgtd() : null,
+                vo -> vo.getLttd() != null ? vo.getLttd() : null,
                 FprdPointInfoVo::getAnchoPointState,
                 FprdPointInfoVo::setDistance
         );
diff --git a/backend/src/main/java/com/yfd/platform/qgc_env/overview/entity/vo/OverviewMsstbprptVo.java b/backend/src/main/java/com/yfd/platform/qgc_env/overview/entity/vo/OverviewMsstbprptVo.java
index effa1e33..dd7732c1 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_env/overview/entity/vo/OverviewMsstbprptVo.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_env/overview/entity/vo/OverviewMsstbprptVo.java
@@ -4,6 +4,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
 import java.io.Serializable;
+import java.math.BigDecimal;
 import java.util.Date;
 
 @Data
@@ -21,8 +22,8 @@ public class OverviewMsstbprptVo implements Serializable {
     private String sttpFullPath;
     private Integer sttpTreeLevel;
     private String blprdId;
-    private Double lgtd;
-    private Double lttd;
+    private BigDecimal lgtd;
+    private BigDecimal lttd;
     private Double dtmel;
     private String stlc;
     private Integer usfl;
diff --git a/backend/src/main/java/com/yfd/platform/qgc_env/vap/entity/vo/FhvapBuiltPointVo.java b/backend/src/main/java/com/yfd/platform/qgc_env/vap/entity/vo/FhvapBuiltPointVo.java
index f71df8e4..5f4d8c60 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_env/vap/entity/vo/FhvapBuiltPointVo.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_env/vap/entity/vo/FhvapBuiltPointVo.java
@@ -2,6 +2,8 @@ package com.yfd.platform.qgc_env.vap.entity.vo;
 
 import lombok.Data;
 
+import java.math.BigDecimal;
+
 @Data
 public class FhvapBuiltPointVo {
 
@@ -15,9 +17,9 @@ public class FhvapBuiltPointVo {
 
     private String bldstt;
 
-    private Double lttd;
+    private BigDecimal lttd;
 
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     private Double dtmel;
 
diff --git a/backend/src/main/java/com/yfd/platform/qgc_env/vap/entity/vo/VpVmsstbprptVo.java b/backend/src/main/java/com/yfd/platform/qgc_env/vap/entity/vo/VpVmsstbprptVo.java
index 12bbfcad..5d099b80 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_env/vap/entity/vo/VpVmsstbprptVo.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_env/vap/entity/vo/VpVmsstbprptVo.java
@@ -62,10 +62,10 @@ public class VpVmsstbprptVo implements Serializable {
     private Integer sttpTreeLevel;
 
     @Schema(description = "经度")
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     @Schema(description = "纬度")
-    private Double lttd;
+    private BigDecimal lttd;
 
     @Schema(description = "站址")
     private String stlc;
diff --git a/backend/src/main/java/com/yfd/platform/qgc_env/vap/entity/vo/WvaPointVo.java b/backend/src/main/java/com/yfd/platform/qgc_env/vap/entity/vo/WvaPointVo.java
index ac2802b5..b6bbb8f2 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_env/vap/entity/vo/WvaPointVo.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_env/vap/entity/vo/WvaPointVo.java
@@ -2,6 +2,8 @@ package com.yfd.platform.qgc_env.vap.entity.vo;
 
 import lombok.Data;
 
+import java.math.BigDecimal;
+
 @Data
 public class WvaPointVo {
 
@@ -17,9 +19,9 @@ public class WvaPointVo {
 
     private String bldstt;
 
-    private Double lttd;
+    private BigDecimal lttd;
 
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     private Double dtmel;
 
diff --git a/backend/src/main/java/com/yfd/platform/qgc_env/wq/entity/vo/WqBaseInfoVo.java b/backend/src/main/java/com/yfd/platform/qgc_env/wq/entity/vo/WqBaseInfoVo.java
index 0fc81648..afda0eb0 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_env/wq/entity/vo/WqBaseInfoVo.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_env/wq/entity/vo/WqBaseInfoVo.java
@@ -3,6 +3,7 @@ package com.yfd.platform.qgc_env.wq.entity.vo;
 import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
+import java.math.BigDecimal;
 import java.util.Date;
 
 @Data
@@ -22,10 +23,10 @@ public class WqBaseInfoVo {
     private String sttp;
 
     @Schema(description = "经度")
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     @Schema(description = "纬度")
-    private Double lttd;
+    private BigDecimal lttd;
 
     @Schema(description = "海拔")
     private Double elev;
diff --git a/backend/src/main/java/com/yfd/platform/qgc_env/wt/entity/vo/SdWtBaseInfoVO.java b/backend/src/main/java/com/yfd/platform/qgc_env/wt/entity/vo/SdWtBaseInfoVO.java
index 18561f8f..adbd1315 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_env/wt/entity/vo/SdWtBaseInfoVO.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_env/wt/entity/vo/SdWtBaseInfoVO.java
@@ -4,6 +4,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
 import java.io.Serializable;
+import java.math.BigDecimal;
 import java.util.Date;
 
 @Data
@@ -99,8 +100,8 @@ public class SdWtBaseInfoVO implements Serializable {
     private String hbrvcdName;
 
     @Schema(description = "经度")
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     @Schema(description = "纬度")
-    private Double lttd;
+    private BigDecimal lttd;
 }
diff --git a/backend/src/main/java/com/yfd/platform/qgc_env/wt/entity/vo/WtBaseInfoVo.java b/backend/src/main/java/com/yfd/platform/qgc_env/wt/entity/vo/WtBaseInfoVo.java
index 37d0f22f..8acf3809 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_env/wt/entity/vo/WtBaseInfoVo.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_env/wt/entity/vo/WtBaseInfoVo.java
@@ -23,10 +23,10 @@ public class WtBaseInfoVo {
     private String sttp;
 
     @Schema(description = "经度")
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     @Schema(description = "纬度")
-    private Double lttd;
+    private BigDecimal lttd;
 
     @Schema(description = "海拔")
     private Double elev;
diff --git a/backend/src/main/java/com/yfd/platform/qgc_env/zq/entity/vo/ZqBaseInfoVo.java b/backend/src/main/java/com/yfd/platform/qgc_env/zq/entity/vo/ZqBaseInfoVo.java
index ed88d45b..2a666002 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_env/zq/entity/vo/ZqBaseInfoVo.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_env/zq/entity/vo/ZqBaseInfoVo.java
@@ -3,6 +3,7 @@ package com.yfd.platform.qgc_env.zq.entity.vo;
 import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
+import java.math.BigDecimal;
 import java.util.Date;
 
 @Data
@@ -25,10 +26,10 @@ public class ZqBaseInfoVo {
     private String sttpCode;
 
     @Schema(description = "经度")
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     @Schema(description = "纬度")
-    private Double lttd;
+    private BigDecimal lttd;
 
     @Schema(description = "水温设备类型")
     private Integer wtDeviceType;
diff --git a/backend/src/main/java/com/yfd/platform/qgc_sys/obliqueImage/domain/MsObliqueImageB.java b/backend/src/main/java/com/yfd/platform/qgc_sys/obliqueImage/domain/MsObliqueImageB.java
index d3ea5efd..9c545c74 100644
--- a/backend/src/main/java/com/yfd/platform/qgc_sys/obliqueImage/domain/MsObliqueImageB.java
+++ b/backend/src/main/java/com/yfd/platform/qgc_sys/obliqueImage/domain/MsObliqueImageB.java
@@ -8,6 +8,7 @@ import io.swagger.v3.oas.annotations.media.Schema;
 import lombok.Data;
 
 import java.io.Serializable;
+import java.math.BigDecimal;
 import java.util.Date;
 
 /**
@@ -91,11 +92,11 @@ public class MsObliqueImageB implements Serializable {
 
     /** 电站经度（非数据库字段） */
     @TableField("LGTD")
-    private Double lgtd;
+    private BigDecimal lgtd;
 
     /** 电站纬度（非数据库字段） */
     @TableField("LTTD")
-    private Double lttd;
+    private BigDecimal lttd;
 
     /** 电站坐标JSON串 */
     @TableField("LOCATION")