diff --git a/src/main/java/net/geedge/asw/module/runner/service/impl/JobServiceImpl.java b/src/main/java/net/geedge/asw/module/runner/service/impl/JobServiceImpl.java
index 80e495b..194114a 100644
--- a/src/main/java/net/geedge/asw/module/runner/service/impl/JobServiceImpl.java
+++ b/src/main/java/net/geedge/asw/module/runner/service/impl/JobServiceImpl.java
@@ -156,13 +156,20 @@ public class JobServiceImpl extends ServiceImpl<JobDao, JobEntity> implements IJ
 
         if (logFile.exists()){
             try (RandomAccessFile raf = new RandomAccessFile(logFile, "r")) {
-                raf.seek(offset);
-                byte[] bytes = new byte[(int)raf.length() - offset];
-                raf.readFully(bytes);
-                String content = new String(bytes);
-                result.put("content", content);
-                result.put("length", bytes.length);
-                result.put("offset", offset + bytes.length);
+                if (offset > raf.length()){
+                    result.put("content", T.StrUtil.EMPTY);
+                    result.put("length", 0);
+                    result.put("offset", offset);
+                }else {
+                    raf.seek(offset);
+                    byte[] bytes = new byte[(int)raf.length() - offset];
+                    raf.readFully(bytes);
+                    String content = new String(bytes);
+                    result.put("content", content);
+                    result.put("length", bytes.length);
+                    result.put("offset", offset + bytes.length);
+                }
+
             } catch (IOException e) {
                 log.error("queryJobLog error", e);
                 throw new ASWException(RCode.ERROR);