diff --git a/nursing-unit-invoicing/nu-invoicing-biz/src/main/java/com/nu/modules/thd/service/impl/ThdServiceImpl.java b/nursing-unit-invoicing/nu-invoicing-biz/src/main/java/com/nu/modules/thd/service/impl/ThdServiceImpl.java
index 12e8c3fb..13cae5b0 100644
--- a/nursing-unit-invoicing/nu-invoicing-biz/src/main/java/com/nu/modules/thd/service/impl/ThdServiceImpl.java
+++ b/nursing-unit-invoicing/nu-invoicing-biz/src/main/java/com/nu/modules/thd/service/impl/ThdServiceImpl.java
@@ -98,7 +98,9 @@ public class ThdServiceImpl implements ITuiHuoApi {
                                                     list -> {
                                                         List<InvoicingThdLogEntity> r_ = Lists.newArrayList();
                                                         r_.add(list.get(0));
-                                                        r_.add(list.get(list.size() - 1));
+                                                        if (list.size() > 1) {
+                                                            r_.add(list.get(list.size() - 1));
+                                                        }
                                                         return r_;
                                                     }
                                             ))