diff --git a/jeecg-module-beta-gamma-analyser/src/main/java/org/jeecg/common/util/FileFtransitUtil.java b/jeecg-module-beta-gamma-analyser/src/main/java/org/jeecg/common/util/FileFtransitUtil.java
index c74540c9..fe08c91f 100644
--- a/jeecg-module-beta-gamma-analyser/src/main/java/org/jeecg/common/util/FileFtransitUtil.java
+++ b/jeecg-module-beta-gamma-analyser/src/main/java/org/jeecg/common/util/FileFtransitUtil.java
@@ -963,8 +963,11 @@ public class FileFtransitUtil {
 
             int cal_s = (int) CalS;
             int cal_ms = (int) ((CalS - cal_s) * 10);
-            String calibra_time = LocalDateTime.of(CalY, CalM, CalD, CalH, CalMin, cal_s, cal_ms)
-                    .format(DateTimeFormatter.ofPattern(DateConstant.DATE_BIAS_TIME_MS));
+            String calibra_time = "";
+            if (CalY > 0 && CalM > 0 && CalD >= 0 && CalH >= 0 && CalMin >= 0 && cal_s >= 0 && cal_ms >= 0) {
+                calibra_time = LocalDateTime.of(CalY, CalM, CalD, CalH, CalMin, cal_s, cal_ms)
+                        .format(DateTimeFormatter.ofPattern(DateConstant.DATE_BIAS_TIME_MS));
+            }
             datas.setCalibra_time(calibra_time);
 
             // g_Energy g_Resolution
@@ -1631,7 +1634,7 @@ public class FileFtransitUtil {
                 default: temp+="Jan"; break;
             }
             temp+=String.format("-%s", str.substring(2, 4)); // DD-MMM-YY
-            if(str.substring(0, 2) == "20") { // DD-MMM-YY*
+            if(str.substring(0, 2).equalsIgnoreCase("20")) { // DD-MMM-YY*
                 temp+="1";
             } else {
                 temp+="0";
@@ -1639,6 +1642,7 @@ public class FileFtransitUtil {
         } else {
             temp = StringPool.DASH;
             temp+="Jan";
+            temp+= StringPool.DASH;
             temp+="0";
         }
         return temp;