diff --git a/pmapi/src/main/java/com/ningdatech/pmapi/meeting/helper/ExpertRandomInviteAlgorithm.java b/pmapi/src/main/java/com/ningdatech/pmapi/meeting/helper/ExpertRandomInviteAlgorithm.java
index 4adc9d3..d71a8d7 100644
--- a/pmapi/src/main/java/com/ningdatech/pmapi/meeting/helper/ExpertRandomInviteAlgorithm.java
+++ b/pmapi/src/main/java/com/ningdatech/pmapi/meeting/helper/ExpertRandomInviteAlgorithm.java
@@ -22,6 +22,10 @@ import java.util.stream.Collectors;
  **/
 public class ExpertRandomInviteAlgorithm {
 
+    private static boolean expertMatchNone(List<MeetingExpert> experts, ExpertUserFullInfo userInfo) {
+        return experts.stream().noneMatch(w -> w.getExpertId().equals(userInfo.getUserId()));
+    }
+
     /**
      * 每个单位只抽取一人
      *
@@ -49,7 +53,7 @@ public class ExpertRandomInviteAlgorithm {
                 List<ExpertUserFullInfo> expertsByCompany = expertGroupByUnit.get(company);
                 for (List<MeetingExpert> experts : expertsByRecentMeeting) {
                     List<ExpertUserFullInfo> notInvitedUsers = expertsByCompany.stream()
-                            .filter(w -> experts.stream().noneMatch(expert -> expert.getExpertId().equals(w.getUserId())))
+                            .filter(w -> expertMatchNone(experts, w))
                             .collect(Collectors.toList());
                     if (!notInvitedUsers.isEmpty()) {
                         result.add(RandomUtil.randomEle(notInvitedUsers));
@@ -88,7 +92,7 @@ public class ExpertRandomInviteAlgorithm {
             result = new ArrayList<>();
             for (List<MeetingExpert> experts : expertsByRecentMeeting) {
                 List<ExpertUserFullInfo> notInvitedUsers = userFullInfos.stream()
-                        .filter(w -> experts.stream().noneMatch(expert -> expert.getExpertId().equals(w.getUserId())))
+                        .filter(w -> expertMatchNone(experts, w))
                         .collect(Collectors.toList());
                 if (!notInvitedUsers.isEmpty()) {
                     result.addAll(notInvitedUsers);