diff --git a/src/main/java/com/gunshi/project/xyt/service/OsmoticPressRService.java b/src/main/java/com/gunshi/project/xyt/service/OsmoticPressRService.java
index 10878cb..568446b 100644
--- a/src/main/java/com/gunshi/project/xyt/service/OsmoticPressRService.java
+++ b/src/main/java/com/gunshi/project/xyt/service/OsmoticPressRService.java
@@ -392,24 +392,26 @@ public class OsmoticPressRService extends ServiceImpl<OsmoticPressRMapper, Osmot
         }
         OsmoticQuerySo so = new OsmoticQuerySo();
         List<String> stationCodes = list.stream().map(OsmoticPressVo::getStationCode).collect(Collectors.toList());
-        String maxTm = list.stream().filter(o->o.getTm() != null).max(Comparator.comparing(OsmoticPressVo::getTm)).get().getTm();
-        String minTm = list.stream().filter(o->o.getTm() != null).min(Comparator.comparing(OsmoticPressVo::getTm)).get().getTm();
-        so.setStationCodes(stationCodes);
-        DateTimeRangeSo dateTimeRangeSo = new DateTimeRangeSo();
-        dateTimeRangeSo.setStart(DateUtil.convertStringToDate(minTm));
-        dateTimeRangeSo.setEnd(DateUtil.convertStringToDate(maxTm));
-        so.setDateTimeRangeSo(dateTimeRangeSo);
-        List<OsmoticValueVo> warnList = baseMapper.queryWarn(so);
-        list.stream().map(o->{
-            if(o.getTm() != null && DateUtil.hoursBetweenDate(DateUtil.convertStringToDate(o.getTm()), new Date()) > 48){
-                o.setFlag(1);
-            }
-            Boolean b = warnList.stream().filter(t->t.getStationCode().equals(o.getStationCode()) && t.getTm().equals(o.getTm())).findAny().isPresent();
-            if(b){
-                o.setStatus(1);
-            }
-            return o;
-        }).collect(Collectors.toList());
+        if(list.stream().filter(o->o.getTm() != null).collect(Collectors.toList()).size() > 0 ){
+            String maxTm = list.stream().filter(o->o.getTm() != null).max(Comparator.comparing(OsmoticPressVo::getTm)).get().getTm();
+            String minTm = list.stream().filter(o->o.getTm() != null).min(Comparator.comparing(OsmoticPressVo::getTm)).get().getTm();
+            so.setStationCodes(stationCodes);
+            DateTimeRangeSo dateTimeRangeSo = new DateTimeRangeSo();
+            dateTimeRangeSo.setStart(DateUtil.convertStringToDate(minTm));
+            dateTimeRangeSo.setEnd(DateUtil.convertStringToDate(maxTm));
+            so.setDateTimeRangeSo(dateTimeRangeSo);
+            List<OsmoticValueVo> warnList = baseMapper.queryWarn(so);
+            list.stream().map(o->{
+                if(o.getTm() != null && DateUtil.hoursBetweenDate(DateUtil.convertStringToDate(o.getTm()), new Date()) > 48){
+                    o.setFlag(1);
+                }
+                Boolean b = warnList.stream().filter(t->t.getStationCode().equals(o.getStationCode()) && t.getTm().equals(o.getTm())).findAny().isPresent();
+                if(b){
+                    o.setStatus(1);
+                }
+                return o;
+            }).collect(Collectors.toList());
+        }
         return list;
     }