diff --git a/src/main/java/org/bdware/sc/ContractClient.java b/src/main/java/org/bdware/sc/ContractClient.java
index 8512dc5..67caa51 100644
--- a/src/main/java/org/bdware/sc/ContractClient.java
+++ b/src/main/java/org/bdware/sc/ContractClient.java
@@ -22,6 +22,7 @@ import org.bdware.sc.util.JsonUtil;
 
 import java.io.ByteArrayOutputStream;
 import java.io.File;
+import java.io.InputStream;
 import java.io.PrintStream;
 import java.lang.reflect.Field;
 import java.util.*;
@@ -285,7 +286,8 @@ public class ContractClient {
             PrintStream printStream = new PrintStream(process.getOutputStream());
             printStream.println("CP PID:" + pid);
             printStream.close();
-            Scanner sc = new Scanner(process.getInputStream());
+            InputStream processInputStream = process.getInputStream();
+            Scanner sc = new Scanner(processInputStream);
             String status = null;
             while (sc.hasNext()) {
                 status = sc.nextLine();
@@ -315,18 +317,18 @@ public class ContractClient {
             ContractManager.cPort.updateDb(port, true);
             get = new SocketGet("127.0.0.1", port);
             get.syncGet("", "setDBInfo", ContractManager.dbPath);
-            String tagA = (ps == System.out ? "[Contract_" + port + "_out] " : "");
-            String tagB = (ps == System.out ? "[Contract_" + port + "_err] " : "");
             if (isDebug) {
-                LOGGER.debug("start as Debug, track err/out");
+                String tagA = (ps == System.out ? "[Contract_" + port + "_out] " : "");
+                String tagB = (ps == System.out ? "[Contract_" + port + "_err] " : "");
                 outputTracer.track(process, sc, tagA, ps);
                 errorTracer.track(process, new Scanner(process.getErrorStream()), tagB, ps);
             } else {
-                LOGGER.debug("start, do not track err/out");
+                // 关闭流，否则缓冲区打满会阻塞进程
+                processInputStream.close();
                 sc.close();
             }
-
             get.syncGet("", "registerMangerPort", String.valueOf(ContractManager.cPort.getCMPort()));
+
             if (isBundlePath(contractMeta.contract.getScriptStr())) {
                 status =
                         get.syncGet(