diff --git a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/fault/delay/DelayFaultInjection.java b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/fault/delay/DelayFaultInjection.java
index 4f229b636..247c1d503 100644
--- a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/fault/delay/DelayFaultInjection.java
+++ b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/fault/delay/DelayFaultInjection.java
@@ -35,9 +35,8 @@ public class DelayFaultInjection implements FaultInjection {
 
     @Override
     public void acquire(FaultInjectionPolicy policy) {
-        if (policy.getDelayTimeMs() != null && policy.getDelayTimeMs() > 0 &&
-                (policy.getPercent() == null
-                        || policy.getPercent() <= 0
+        if (policy.getDelayTimeMs() > 0 &&
+                (policy.getPercent() <= 0
                         || ThreadLocalRandom.current().nextInt(100) < policy.getPercent())) {
             try {
                 if (logger.isDebugEnabled()) {
diff --git a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/fault/error/ErrorFaultInjection.java b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/fault/error/ErrorFaultInjection.java
index 5e9adf80f..df0624e72 100644
--- a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/fault/error/ErrorFaultInjection.java
+++ b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/invoke/fault/error/ErrorFaultInjection.java
@@ -32,8 +32,7 @@ public class ErrorFaultInjection implements FaultInjection {
 
     @Override
     public void acquire(FaultInjectionPolicy policy) {
-        if (policy.getPercent() == null
-                || policy.getPercent() <= 0
+        if (policy.getPercent() <= 0
                 || ThreadLocalRandom.current().nextInt(100) < policy.getPercent()) {
             String errorMsg = policy.getErrorMsg() == null ? "Error by fault injection" : policy.getErrorMsg();
             throw new FaultException(policy.getErrorCode(), errorMsg);
diff --git a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/policy/service/fault/FaultInjectionPolicy.java b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/policy/service/fault/FaultInjectionPolicy.java
index 222a6d16e..b9cf372e8 100644
--- a/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/policy/service/fault/FaultInjectionPolicy.java
+++ b/joylive-core/joylive-governance-api/src/main/java/com/jd/live/agent/governance/policy/service/fault/FaultInjectionPolicy.java
@@ -44,11 +44,11 @@ public class FaultInjectionPolicy extends PolicyId implements PolicyInheritWithI
 
     private RelationType relationType;
 
-    private Integer percent;
+    private int percent;
 
-    private Long delayTimeMs;
+    private long delayTimeMs;
 
-    private Integer errorCode;
+    private int errorCode;
 
     private String errorMsg;