diff --git a/core/backend/src/main/java/io/dataease/service/datafill/DataFillDataService.java b/core/backend/src/main/java/io/dataease/service/datafill/DataFillDataService.java
index 6323fb8abb..cf5c36d068 100644
--- a/core/backend/src/main/java/io/dataease/service/datafill/DataFillDataService.java
+++ b/core/backend/src/main/java/io/dataease/service/datafill/DataFillDataService.java
@@ -735,7 +735,7 @@ public class DataFillDataService {
                                 rowData.put(field.getSettings().getMapping().getColumnName(), excelRowData);
                             } else if (StringUtils.equalsIgnoreCase(field.getType(), "checkbox") ||
                                     StringUtils.equalsIgnoreCase(field.getType(), "select") && field.getSettings().isMultiple()) {
-                                List<String> list = new ArrayList<>();
+                                Set<String> list = new HashSet<>();
                                 String[] strArr = excelRowData.split(";");
                                 for (String str : strArr) {
                                     if (StringUtils.isNotBlank(str)) {