diff --git a/inlong-sdk/dataproxy-sdk/src/main/java/org/apache/inlong/sdk/dataproxy/ProxyClientConfig.java b/inlong-sdk/dataproxy-sdk/src/main/java/org/apache/inlong/sdk/dataproxy/ProxyClientConfig.java
index 6a80fbf21c..1d03ee5b3a 100644
--- a/inlong-sdk/dataproxy-sdk/src/main/java/org/apache/inlong/sdk/dataproxy/ProxyClientConfig.java
+++ b/inlong-sdk/dataproxy-sdk/src/main/java/org/apache/inlong/sdk/dataproxy/ProxyClientConfig.java
@@ -528,9 +528,9 @@ private void checkAndParseAddress(String managerAddress) throws ProxysdkExceptio
         String hostPortInfo;
         if (managerAddress.startsWith(ConfigConstants.HTTPS)) {
             this.visitManagerByHttp = false;
-            hostPortInfo = managerAddress.substring(ConfigConstants.HTTPS.length() + 1);
+            hostPortInfo = managerAddress.substring(ConfigConstants.HTTPS.length());
         } else {
-            hostPortInfo = managerAddress.substring(ConfigConstants.HTTP.length() + 1);
+            hostPortInfo = managerAddress.substring(ConfigConstants.HTTP.length());
         }
         if (StringUtils.isBlank(hostPortInfo)) {
             throw new ProxysdkException("managerAddress must include host:port info!");