diff --git a/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/SchemaElement.java b/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/SchemaElement.java
index 729b37a47..3d3156fda 100644
--- a/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/SchemaElement.java
+++ b/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/SchemaElement.java
@@ -84,14 +84,14 @@ public class SchemaElement implements Serializable {
             return false;
         }
         Object o = extInfo.get(DimensionConstants.DIMENSION_TYPE);
-        DimensionType dimensionTYpe = null;
+        DimensionType dimensionType = null;
         if (o instanceof DimensionType) {
-            dimensionTYpe = (DimensionType) o;
+            dimensionType = (DimensionType) o;
         }
         if (o instanceof String) {
-            dimensionTYpe = DimensionType.valueOf((String) o);
+            dimensionType = DimensionType.valueOf((String) o);
         }
-        return DimensionType.isIdentity(dimensionTYpe);
+        return DimensionType.isPrimaryKey(dimensionType);
     }
 
     public String getTimeFormat() {
diff --git a/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/enums/DimensionType.java b/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/enums/DimensionType.java
index 6362693a6..72f6eac45 100644
--- a/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/enums/DimensionType.java
+++ b/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/enums/DimensionType.java
@@ -1,7 +1,16 @@
 package com.tencent.supersonic.headless.api.pojo.enums;
 
 public enum DimensionType {
-    categorical, time, partition_time, identify;
+    categorical, time, partition_time, primary_key, foreign_key;
+
+    public static DimensionType fromIdentify(String identify) {
+        if (IdentifyType.foreign.name().equalsIgnoreCase(identify)) {
+            return DimensionType.foreign_key;
+        } else if (IdentifyType.primary.name().equalsIgnoreCase(identify)) {
+            return DimensionType.primary_key;
+        }
+        return DimensionType.categorical;
+    }
 
     public static boolean isTimeDimension(String type) {
         try {
@@ -19,7 +28,7 @@ public enum DimensionType {
         return type == partition_time;
     }
 
-    public static boolean isIdentity(DimensionType type) {
-        return type == identify;
+    public static boolean isPrimaryKey(DimensionType type) {
+        return type == primary_key;
     }
 }
diff --git a/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/response/ModelResp.java b/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/response/ModelResp.java
index a540ea6a9..3677f5ceb 100644
--- a/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/response/ModelResp.java
+++ b/headless/api/src/main/java/com/tencent/supersonic/headless/api/pojo/response/ModelResp.java
@@ -7,6 +7,7 @@ import com.tencent.supersonic.headless.api.pojo.Field;
 import com.tencent.supersonic.headless.api.pojo.Identify;
 import com.tencent.supersonic.headless.api.pojo.ModelDetail;
 import com.tencent.supersonic.headless.api.pojo.SchemaItem;
+import com.tencent.supersonic.headless.api.pojo.enums.IdentifyType;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
@@ -95,6 +96,16 @@ public class ModelResp extends SchemaItem {
         return fieldSet;
     }
 
+    public IdentifyType getIdentifyType(String fieldName) {
+        List<Identify> identifiers = modelDetail.getIdentifiers();
+        for (Identify identify : identifiers) {
+            if (Objects.equals(identify.getFieldName(), fieldName)) {
+                return IdentifyType.valueOf(identify.getType());
+            }
+        }
+        return null;
+    }
+
     @Override
     public boolean equals(Object o) {
         if (this == o) {
diff --git a/headless/server/src/main/java/com/tencent/supersonic/headless/server/service/impl/ModelRelaServiceImpl.java b/headless/server/src/main/java/com/tencent/supersonic/headless/server/service/impl/ModelRelaServiceImpl.java
index 474916c35..b3aee1f98 100644
--- a/headless/server/src/main/java/com/tencent/supersonic/headless/server/service/impl/ModelRelaServiceImpl.java
+++ b/headless/server/src/main/java/com/tencent/supersonic/headless/server/service/impl/ModelRelaServiceImpl.java
@@ -8,9 +8,14 @@ import com.tencent.supersonic.common.pojo.JoinCondition;
 import com.tencent.supersonic.common.pojo.ModelRela;
 import com.tencent.supersonic.common.pojo.User;
 import com.tencent.supersonic.common.util.BeanMapper;
+import com.tencent.supersonic.headless.api.pojo.enums.IdentifyType;
+import com.tencent.supersonic.headless.api.pojo.response.ModelResp;
 import com.tencent.supersonic.headless.server.persistence.dataobject.ModelRelaDO;
 import com.tencent.supersonic.headless.server.persistence.mapper.ModelRelaDOMapper;
 import com.tencent.supersonic.headless.server.service.ModelRelaService;
+import com.tencent.supersonic.headless.server.service.ModelService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Lazy;
 import org.springframework.stereotype.Service;
 import org.springframework.util.CollectionUtils;
 
@@ -21,8 +26,13 @@ import java.util.stream.Collectors;
 public class ModelRelaServiceImpl extends ServiceImpl<ModelRelaDOMapper, ModelRelaDO>
         implements ModelRelaService {
 
+    @Lazy
+    @Autowired
+    private ModelService modelService;
+
     @Override
     public void save(ModelRela modelRela, User user) {
+        check(modelRela);
         modelRela.createdBy(user.getName());
         ModelRelaDO modelRelaDO = convert(modelRela);
         save(modelRelaDO);
@@ -30,11 +40,31 @@ public class ModelRelaServiceImpl extends ServiceImpl<ModelRelaDOMapper, ModelRe
 
     @Override
     public void update(ModelRela modelRela, User user) {
+        check(modelRela);
         modelRela.updatedBy(user.getName());
         ModelRelaDO modelRelaDO = convert(modelRela);
         updateById(modelRelaDO);
     }
 
+    private void check(ModelRela modelRela) {
+        ModelResp fromModel = modelService.getModel(modelRela.getFromModelId());
+        ModelResp toModel = modelService.getModel(modelRela.getToModelId());
+        if (CollectionUtils.isEmpty(modelRela.getJoinConditions())) {
+            throw new RuntimeException("关联关系不可为空");
+        }
+        for (JoinCondition joinCondition : modelRela.getJoinConditions()) {
+            IdentifyType identifyTypeLeft = fromModel.getIdentifyType(joinCondition.getLeftField());
+            IdentifyType identifyTypeRight = toModel.getIdentifyType(joinCondition.getRightField());
+            if (IdentifyType.foreign.equals(identifyTypeLeft)
+                    || IdentifyType.foreign.equals(identifyTypeRight)) {
+                if (!IdentifyType.primary.equals(identifyTypeLeft)
+                        && !IdentifyType.primary.equals(identifyTypeRight)) {
+                    throw new RuntimeException("外键必须跟主键关联");
+                }
+            }
+        }
+    }
+
     @Override
     public List<ModelRela> getModelRelaList(Long domainId) {
         QueryWrapper<ModelRelaDO> wrapper = new QueryWrapper<>();
diff --git a/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/DimensionConverter.java b/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/DimensionConverter.java
index 28809821c..3e5244898 100644
--- a/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/DimensionConverter.java
+++ b/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/DimensionConverter.java
@@ -116,7 +116,7 @@ public class DimensionConverter {
         try {
             // Support compatibility with legacy data.
             IdentifyType.valueOf(type.toLowerCase());
-            return DimensionType.identify;
+            return DimensionType.primary_key;
         } catch (IllegalArgumentException e) {
             return DimensionType.valueOf(type);
         }
diff --git a/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/ModelConverter.java b/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/ModelConverter.java
index eee4263c9..615fe1096 100644
--- a/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/ModelConverter.java
+++ b/headless/server/src/main/java/com/tencent/supersonic/headless/server/utils/ModelConverter.java
@@ -152,7 +152,7 @@ public class ModelConverter {
         dimensionReq.setSemanticType(SemanticType.CATEGORY.name());
         dimensionReq.setModelId(modelDO.getId());
         dimensionReq.setExpr(identify.getBizName());
-        dimensionReq.setType(DimensionType.identify.name());
+        dimensionReq.setType(DimensionType.fromIdentify(identify.getType()).name());
         return dimensionReq;
     }
 
diff --git a/launchers/standalone/src/main/java/com/tencent/supersonic/demo/S2VisitsDemo.java b/launchers/standalone/src/main/java/com/tencent/supersonic/demo/S2VisitsDemo.java
index b60a9b752..854614edf 100644
--- a/launchers/standalone/src/main/java/com/tencent/supersonic/demo/S2VisitsDemo.java
+++ b/launchers/standalone/src/main/java/com/tencent/supersonic/demo/S2VisitsDemo.java
@@ -224,7 +224,7 @@ public class S2VisitsDemo extends S2BaseDemo {
         modelReq.setAdminOrgs(Collections.emptyList());
         List<Identify> identifiers = new ArrayList<>();
         ModelDetail modelDetail = new ModelDetail();
-        identifiers.add(new Identify("用户名", IdentifyType.primary.name(), "user_name", 0));
+        identifiers.add(new Identify("用户名", IdentifyType.foreign.name(), "user_name", 0));
         modelDetail.setIdentifiers(identifiers);
 
         List<Dim> dimensions = new ArrayList<>();
@@ -268,7 +268,7 @@ public class S2VisitsDemo extends S2BaseDemo {
         modelReq.setAdminOrgs(Collections.emptyList());
         List<Identify> identifiers = new ArrayList<>();
         ModelDetail modelDetail = new ModelDetail();
-        identifiers.add(new Identify("用户", IdentifyType.primary.name(), "user_name", 0));
+        identifiers.add(new Identify("用户", IdentifyType.foreign.name(), "user_name", 0));
         modelDetail.setIdentifiers(identifiers);
 
         List<Dim> dimensions = new ArrayList<>();