diff --git a/CHANGELOG.md b/CHANGELOG.md
index b0b57b739..a663b3d72 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,4 +2,5 @@
 ---
 
 - [Bugfix: fix router bug and add router example](https://github.com/Tencent/spring-cloud-tencent/pull/89)
+- [feat:fix discovery weight param not set to register request bug](https://github.com/Tencent/spring-cloud-tencent/pull/102)
 
diff --git a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/PolarisDiscoveryProperties.java b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/PolarisDiscoveryProperties.java
index 35f397217..351ab62f3 100644
--- a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/PolarisDiscoveryProperties.java
+++ b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/PolarisDiscoveryProperties.java
@@ -56,7 +56,7 @@ public class PolarisDiscoveryProperties {
 	 * Load balance weight.
 	 */
 	@Value("${spring.cloud.polaris.discovery.weight:#{100}}")
-	private float weight;
+	private int weight;
 
 	/**
 	 * Version number.
@@ -134,11 +134,11 @@ public class PolarisDiscoveryProperties {
 		this.namespace = namespace;
 	}
 
-	public float getWeight() {
+	public int getWeight() {
 		return weight;
 	}
 
-	public void setWeight(float weight) {
+	public void setWeight(int weight) {
 		this.weight = weight;
 	}
 
diff --git a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisServiceRegistry.java b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisServiceRegistry.java
index 7e72a075d..b947db594 100644
--- a/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisServiceRegistry.java
+++ b/spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/PolarisServiceRegistry.java
@@ -95,6 +95,7 @@ public class PolarisServiceRegistry implements ServiceRegistry<Registration> {
 		instanceRegisterRequest.setService(registration.getServiceId());
 		instanceRegisterRequest.setHost(registration.getHost());
 		instanceRegisterRequest.setPort(registration.getPort());
+		instanceRegisterRequest.setWeight(polarisDiscoveryProperties.getWeight());
 		instanceRegisterRequest.setToken(polarisDiscoveryProperties.getToken());
 		if (null != heartbeatExecutor) {
 			instanceRegisterRequest.setTtl(ttl);
diff --git a/spring-cloud-starter-tencent-polaris-discovery/src/main/resources/META-INF/additional-spring-configuration-metadata.json b/spring-cloud-starter-tencent-polaris-discovery/src/main/resources/META-INF/additional-spring-configuration-metadata.json
index 89021b3d2..6608a3b97 100644
--- a/spring-cloud-starter-tencent-polaris-discovery/src/main/resources/META-INF/additional-spring-configuration-metadata.json
+++ b/spring-cloud-starter-tencent-polaris-discovery/src/main/resources/META-INF/additional-spring-configuration-metadata.json
@@ -50,7 +50,7 @@
     },
     {
       "name": "spring.cloud.polaris.weight",
-      "type": "java.lang.String",
+      "type": "java.lang.Integer",
       "defaultValue": 100,
       "description": "the weight of polaris instance , use to load-balance."
     }