diff --git a/CHANGELOG.md b/CHANGELOG.md
index 20ff1fd6c..5a4bf4a74 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -22,3 +22,4 @@
 - [Fix issue: prompt no registration if web dependence was not imported.](https://github.com/Tencent/spring-cloud-tencent/pull/777)
 - [set reporter.enabled default to true](https://github.com/Tencent/spring-cloud-tencent/pull/786)
 - [fix:fix nacos enabled condition bugs.](https://github.com/Tencent/spring-cloud-tencent/pull/794)
+- [fix:fix instance's weight hard code to 100 bug.](https://github.com/Tencent/spring-cloud-tencent/pull/801)
diff --git a/spring-cloud-tencent-polaris-loadbalancer/src/main/java/com/tencent/cloud/polaris/loadbalancer/LoadBalancerUtils.java b/spring-cloud-tencent-polaris-loadbalancer/src/main/java/com/tencent/cloud/polaris/loadbalancer/LoadBalancerUtils.java
index 820c7a0b3..e185de784 100644
--- a/spring-cloud-tencent-polaris-loadbalancer/src/main/java/com/tencent/cloud/polaris/loadbalancer/LoadBalancerUtils.java
+++ b/spring-cloud-tencent-polaris-loadbalancer/src/main/java/com/tencent/cloud/polaris/loadbalancer/LoadBalancerUtils.java
@@ -47,7 +47,6 @@ import org.springframework.util.CollectionUtils;
 public final class LoadBalancerUtils {
 	private static final Logger LOGGER = LoggerFactory.getLogger(LoadBalancerUtils.class);
 
-	private static final int DEFAULT_WEIGHT = 100;
 	private static final int WAIT_TIME = 3;
 
 	private LoadBalancerUtils() {
@@ -104,7 +103,6 @@ public final class LoadBalancerUtils {
 		instance.setId(serviceInstance.getInstanceId());
 		instance.setHost(serviceInstance.getHost());
 		instance.setPort(serviceInstance.getPort());
-		instance.setWeight(DEFAULT_WEIGHT);
 		instance.setMetadata(serviceInstance.getMetadata());
 
 		if (serviceInstance instanceof PolarisServiceInstance) {
@@ -112,6 +110,7 @@ public final class LoadBalancerUtils {
 			instance.setRegion(polarisServiceInstance.getPolarisInstance().getRegion());
 			instance.setZone(polarisServiceInstance.getPolarisInstance().getZone());
 			instance.setCampus(polarisServiceInstance.getPolarisInstance().getCampus());
+			instance.setWeight(polarisServiceInstance.getPolarisInstance().getWeight());
 		}
 
 		return instance;
diff --git a/spring-cloud-tencent-polaris-loadbalancer/src/test/java/com/tencent/cloud/polaris/loadbalancer/LoadBalancerUtilsTest.java b/spring-cloud-tencent-polaris-loadbalancer/src/test/java/com/tencent/cloud/polaris/loadbalancer/LoadBalancerUtilsTest.java
index d4a894de3..130eec813 100644
--- a/spring-cloud-tencent-polaris-loadbalancer/src/test/java/com/tencent/cloud/polaris/loadbalancer/LoadBalancerUtilsTest.java
+++ b/spring-cloud-tencent-polaris-loadbalancer/src/test/java/com/tencent/cloud/polaris/loadbalancer/LoadBalancerUtilsTest.java
@@ -23,7 +23,9 @@ import java.util.List;
 
 import com.tencent.cloud.common.metadata.MetadataContext;
 import com.tencent.cloud.common.metadata.MetadataContextHolder;
+import com.tencent.cloud.common.pojo.PolarisServiceInstance;
 import com.tencent.cloud.common.util.ApplicationContextAwareUtils;
+import com.tencent.polaris.api.pojo.DefaultInstance;
 import com.tencent.polaris.api.pojo.Instance;
 import com.tencent.polaris.api.pojo.ServiceInstances;
 import org.junit.AfterClass;
@@ -36,7 +38,6 @@ import org.mockito.Mockito;
 import org.mockito.junit.MockitoJUnitRunner;
 import reactor.core.publisher.Flux;
 
-import org.springframework.cloud.client.DefaultServiceInstance;
 import org.springframework.cloud.client.ServiceInstance;
 
 import static org.mockito.ArgumentMatchers.anyString;
@@ -80,11 +81,17 @@ public class LoadBalancerUtilsTest {
 	@Test
 	public void testTransferNotEmptyInstances() {
 		int instanceSize = 100;
+		int weight = 50;
 
 		List<ServiceInstance> instances = new ArrayList<>();
 		for (int i = 0; i < instanceSize; i++) {
-			instances.add(new DefaultServiceInstance("ins" + i, testNamespaceAndService, "127.0.0." + i,
-					8080, false));
+			DefaultInstance instance = new DefaultInstance();
+			instance.setService(testNamespaceAndService);
+			instance.setId("ins" + i);
+			instance.setPort(8080);
+			instance.setHost("127.0.0." + i);
+			instance.setWeight(weight);
+			instances.add(new PolarisServiceInstance(instance));
 		}
 
 		ServiceInstances serviceInstances = LoadBalancerUtils.transferServersToServiceInstances(Flux.just(instances));
@@ -100,7 +107,7 @@ public class LoadBalancerUtilsTest {
 			Assert.assertEquals("ins" + i, instance.getId());
 			Assert.assertEquals("127.0.0." + i, instance.getHost());
 			Assert.assertEquals(8080, instance.getPort());
-			Assert.assertEquals(100, instance.getWeight());
+			Assert.assertEquals(weight, instance.getWeight());
 		}
 	}
 }