diff --git a/front/src/views/components/Materials.vue b/front/src/views/components/Materials.vue
index 8b7b474..1b5be18 100644
--- a/front/src/views/components/Materials.vue
+++ b/front/src/views/components/Materials.vue
@@ -11,7 +11,13 @@
           value-format="yyyy-MM-dd"
           size="small"
           style="width: 240px;"/>
-        <el-select v-model="filter.materials_type" placeholder="资料类型" clearable size="small" style="width: 160px; margin-left: 10px;">
+        <el-select
+          v-model="filter.materials_type"
+          placeholder="资料类型"
+          clearable
+          size="small"
+          style="width: 160px; margin-left: 10px;"
+          @change="handleMaterialsTypeChange">
           <el-option label="全部" value=""/>
           <el-option v-for="item in materials_type_list" :key="item.type_id" :label="item.type_name" :value="item.type_id"/>
         </el-select>
@@ -228,6 +234,7 @@ export default {
       fileName: '',
       currentFileName: '',
       query_triggered: false,
+      useDefaultMaterialsType: true,
       total: 0,
       currPage: 1,
       pageSize: 10,
@@ -238,6 +245,7 @@ export default {
       newMaterials: {
         materials_intro: '',
         create_time: '',
+        materials_type: '',
         project_id: 0
       },
       editMaterials: {
@@ -254,9 +262,7 @@ export default {
   },
   mounted() {
     this.get_material_type_list()
-    if (!Array.isArray(this.materials_type)) {
-      this.filter.materials_type = this.materials_type
-    }
+    this.resetDefaultMaterialsType()
   },
   created() {
 
@@ -301,7 +307,7 @@ export default {
     },
     handleReset() {
       this.filter.dateRange = null
-      this.filter.materials_type = ''
+      this.resetDefaultMaterialsType()
       this.currPage = 1
       this.pageSize = 10
       this.total = 0
@@ -317,6 +323,37 @@ export default {
       this.currPage = val
       this.get_materials_info_list()
     },
+    handleMaterialsTypeChange() {
+      this.useDefaultMaterialsType = false
+    },
+    resetDefaultMaterialsType() {
+      this.useDefaultMaterialsType = true
+      this.filter.materials_type = Array.isArray(this.materials_type) ? '' : this.materials_type
+    },
+    hasSelectedMaterialType(value) {
+      return value !== '' && value !== undefined && value !== null
+    },
+    buildMaterialsQueryParams() {
+      const param = {
+        materials_owner: this.materials_owner,
+        materials_class: this.materials_class,
+        currPage: this.currPage,
+        pageSize: this.pageSize
+      }
+
+      if (this.hasSelectedMaterialType(this.filter.materials_type)) {
+        param.materials_type = this.filter.materials_type
+      } else if (this.useDefaultMaterialsType && this.hasSelectedMaterialType(this.materials_type)) {
+        param.materials_type = this.materials_type
+      }
+
+      if (this.filter.dateRange && this.filter.dateRange.length === 2) {
+        param.start_time = this.filter.dateRange[0]
+        param.end_time = this.filter.dateRange[1]
+      }
+
+      return param
+    },
     confirmEdit() {
       const formData = {
         materials_id: this.editMaterials.materials_id,
@@ -429,12 +466,15 @@ export default {
     },
 
     confirmAddMaterials() {
-      if (this.newMaterials.materials_intro.trim() === '') {
+      const materialsIntro = (this.newMaterials.materials_intro || '').trim()
+      const materialsUrl = (this.materials_url || '').trim()
+
+      if (materialsIntro === '') {
         this.$message.warning('请输入文件描述')
         return
       }
       console.log(this.materials_url)
-      if (this.materials_url.trim() === '') {
+      if (materialsUrl === '') {
         this.$message.warning('请选择文件')
         return
       }
@@ -443,7 +483,7 @@ export default {
         materials_class: this.materials_class,
         materials_owner: this.materials_owner,
         materials_type: this.newMaterials.materials_type,
-        materials_intro: this.newMaterials.materials_intro,
+        materials_intro: materialsIntro,
         materials_url: this.materials_url,
         materials_file_name: this.fileName,
         create_time: this.newMaterials.create_time
@@ -468,23 +508,7 @@ export default {
     },
 
     get_materials_info_list() {
-      var param = {
-        materials_owner: this.materials_owner,
-        materials_class: this.materials_class,
-        currPage: this.currPage,
-        pageSize: this.pageSize
-      }
-
-      if (this.filter.materials_type !== '') {
-        param.materials_type = this.filter.materials_type
-      } else if (!Array.isArray(this.materials_type)) {
-        param.materials_type = this.materials_type
-      }
-
-      if (this.filter.dateRange && this.filter.dateRange.length === 2) {
-        param.start_time = this.filter.dateRange[0]
-        param.end_time = this.filter.dateRange[1]
-      }
+      var param = this.buildMaterialsQueryParams()
 
       material.GetMaterialsInfo(param).then(response => {
         const data = response.data.data