diff --git a/broker/src/main/java/org/apache/rocketmq/broker/processor/SendMessageProcessor.java b/broker/src/main/java/org/apache/rocketmq/broker/processor/SendMessageProcessor.java
index 9c42c808bf9ae8b1261386e79b55244a48b231f5..1c7f860b04f3b5d0e71ebc54ed45d4306647dfd4 100644
--- a/broker/src/main/java/org/apache/rocketmq/broker/processor/SendMessageProcessor.java
+++ b/broker/src/main/java/org/apache/rocketmq/broker/processor/SendMessageProcessor.java
@@ -636,7 +636,7 @@ public class SendMessageProcessor extends AbstractSendMessageProcessor implement
     }
 
     private String diskUtil() {
-        double physicRatio = -1;
+        double physicRatio = 100;
         String storePath = this.brokerController.getMessageStoreConfig().getStorePathCommitLog();
         if (storePath.contains(MessageStoreConfig.MULTI_PATH_SPLITTER)) {
             String[] paths = storePath.trim().split(MessageStoreConfig.MULTI_PATH_SPLITTER);
diff --git a/store/src/main/java/org/apache/rocketmq/store/DefaultMessageStore.java b/store/src/main/java/org/apache/rocketmq/store/DefaultMessageStore.java
index 942c10b7266c160ea98ec92f5bd3aec38f5c545d..0af4c3c0ddd6b70eda500ca847f774d3bca373d4 100644
--- a/store/src/main/java/org/apache/rocketmq/store/DefaultMessageStore.java
+++ b/store/src/main/java/org/apache/rocketmq/store/DefaultMessageStore.java
@@ -785,14 +785,14 @@ public class DefaultMessageStore implements MessageStore {
 
         String commitLogStorePath = DefaultMessageStore.this.getMessageStoreConfig().getStorePathCommitLog();
         if (commitLogStorePath.contains(MessageStoreConfig.MULTI_PATH_SPLITTER)) {
-            double maxValue = Double.MIN_VALUE;
+            double minPhysicsUsedRatio = Double.MAX_VALUE;
             String[] paths = commitLogStorePath.trim().split(MessageStoreConfig.MULTI_PATH_SPLITTER);
             for (String clPath : paths) {
                 double physicRatio = UtilAll.getDiskPartitionSpaceUsedPercent(clPath);
                 result.put(RunningStats.commitLogDiskRatio.name() + "_" + clPath, String.valueOf(physicRatio));
-                maxValue = Math.max(maxValue, physicRatio);
+                minPhysicsUsedRatio = Math.min(minPhysicsUsedRatio, physicRatio);
             }
-            result.put(RunningStats.commitLogDiskRatio.name(), String.valueOf(maxValue));
+            result.put(RunningStats.commitLogDiskRatio.name(), String.valueOf(minPhysicsUsedRatio));
         } else {
             String storePathPhysic = DefaultMessageStore.this.getMessageStoreConfig().getStorePathCommitLog();
             double physicRatio = UtilAll.getDiskPartitionSpaceUsedPercent(storePathPhysic);