diff --git a/backup-daemon/customizedatabackupproxy.cpp b/backup-daemon/customizedatabackupproxy.cpp
index 3fffb6c..19d7d77 100755
--- a/backup-daemon/customizedatabackupproxy.cpp
+++ b/backup-daemon/customizedatabackupproxy.cpp
@@ -182,6 +182,7 @@ bool CustomizeDataBackupProxy::checkFreeCapacity(qint64 itotalSize)
     if (itotalSize > freeSize) {
         emit checkResult(int(BackupResult::BACKUP_CAPACITY_IS_NOT_ENOUGH));
         result = false;
+        return result;
     } else {
         emit checkResult(int(BackupResult::CHECK_ENV_SUCCESS));
     }
diff --git a/backup-daemon/customizesystembackupproxy.cpp b/backup-daemon/customizesystembackupproxy.cpp
index 09af0a7..e2b69de 100755
--- a/backup-daemon/customizesystembackupproxy.cpp
+++ b/backup-daemon/customizesystembackupproxy.cpp
@@ -154,6 +154,7 @@ void CustomizeSystemBackupProxy::checkFreeCapacity(qint64 itotalSize)
     // 3、校验空间是否足够
     if (itotalSize > freeSize) {
         emit checkResult(int(BackupResult::BACKUP_CAPACITY_IS_NOT_ENOUGH));
+        return ;
     } else {
         emit checkResult(int(BackupResult::CHECK_ENV_SUCCESS));
     }
diff --git a/backup-daemon/databackupproxy.cpp b/backup-daemon/databackupproxy.cpp
index 78bacd8..da6f15c 100755
--- a/backup-daemon/databackupproxy.cpp
+++ b/backup-daemon/databackupproxy.cpp
@@ -164,6 +164,7 @@ bool DataBackupProxy::checkFreeCapacity(qint64 itotalSize)
     if (itotalSize > freeSize) {
         emit checkResult(int(BackupResult::BACKUP_CAPACITY_IS_NOT_ENOUGH));
         result = false;
+        return result;
     } else {
         emit checkResult(int(BackupResult::CHECK_ENV_SUCCESS));
     }
diff --git a/backup-daemon/systembackupproxy.cpp b/backup-daemon/systembackupproxy.cpp
index 8fbbd43..61954f5 100755
--- a/backup-daemon/systembackupproxy.cpp
+++ b/backup-daemon/systembackupproxy.cpp
@@ -174,6 +174,7 @@ void SystemBackupProxy::checkFreeCapacity(qint64 itotalSize)
     // 3、校验空间是否足够
     if (itotalSize > freeSize) {
         emit checkResult(int(BackupResult::BACKUP_CAPACITY_IS_NOT_ENOUGH));
+        return ;
     } else {
         emit checkResult(int(BackupResult::CHECK_ENV_SUCCESS));
     }
diff --git a/backup-daemon/udiskdatabackupproxy.cpp b/backup-daemon/udiskdatabackupproxy.cpp
index 737f681..31a9031 100755
--- a/backup-daemon/udiskdatabackupproxy.cpp
+++ b/backup-daemon/udiskdatabackupproxy.cpp
@@ -193,6 +193,7 @@ bool UDiskDataBackupProxy::checkFreeCapacityToUdisk(qint64 itotalSize)
     if (itotalSize > freeSize) {
         emit checkResult(int(BackupResult::BACKUP_CAPACITY_IS_NOT_ENOUGH));
         result = false;
+        return result;
     } else {
         emit checkResult(int(BackupResult::CHECK_ENV_SUCCESS));
     }
diff --git a/backup-daemon/udisksystembackupproxy.cpp b/backup-daemon/udisksystembackupproxy.cpp
index e1b6252..94f3476 100755
--- a/backup-daemon/udisksystembackupproxy.cpp
+++ b/backup-daemon/udisksystembackupproxy.cpp
@@ -212,6 +212,7 @@ void UDiskSystemBackupProxy::checkFreeCapacity(qint64 itotalSize)
     // 3、校验空间是否足够
     if (itotalSize > freeSize) {
         emit checkResult(int(BackupResult::BACKUP_CAPACITY_IS_NOT_ENOUGH));
+        return ;
     } else {
         emit checkResult(int(BackupResult::CHECK_ENV_SUCCESS));
     }