张家港末次月经时间改为非必填，如若未填默认为1900-01-01；

src/views/signing/index.vue

@@ -50,7 +50,7 @@
               <input type="text" class="form-control" v-model="BaseForm.lastMensesTime" v-if="signStatus=='update'" :disabled="signStatus=='update'"/>
               <div class="td-table" @click="openPickerLastMensesTime" v-else>
                 <div class="td-table-cell text">
-                  <span v-if="BaseForm.lastMensesTime === ''">请选择末次月经时间</span>
+                  <span v-if="BaseForm.lastMensesTime === ''" style="color:#FF9B44;">领取儿童健康券时可不填写</span>
                   <span v-else class="light">{{BaseForm.lastMensesTime}}</span>
                   <!-- {{BaseForm.lastMensesTime !== '' ? BaseForm.lastMensesTime : '请选择末次月经时间'}} -->
                 </div>
@@ -469,17 +469,6 @@
       :endDate="pickerBirthEnd">
     </mt-datetime-picker>
     <!-- 末次月经时间picker -->
-    <!-- <mt-datetime-picker
-      v-model="pickerLastMensesTimeDefault"
-      ref="pickerLastMensesTime"
-      type="date"
-      year-format="{value} 年"
-      month-format="{value} 月"
-      date-format="{value} 日"
-      @confirm="lastMensesTimePickerConfirm"
-      :startDate="pickerLastMensesTimeStart"
-      :endDate="pickerLastMensesTimeEnd">
-    </mt-datetime-picker> -->
     <mt-datetime-picker
       v-model="pickerLastMensesTimeDefault"
       ref="pickerLastMensesTime"
@@ -488,6 +477,7 @@
       month-format="{value} 月"
       date-format="{value} 日"
       @confirm="lastMensesTimePickerConfirm"
+      :startDate="pickerLastMensesTimeStart"
       :endDate="pickerLastMensesTimeEnd">
     </mt-datetime-picker>
     <div class="light-box" :class="lightBoxVisible?'show':'hide'" @click="handelLightBoxClose">
@@ -892,7 +882,7 @@ export default {
     BaseValidateHandle () { // 表单验证
       this.BaseValidateName()
       this.BaseValidateIdCard()
-      this.BaseValidateMensesLastDate()
+      // this.BaseValidateMensesLastDate()
       this.BaseValidatePhone()
       this.BaseValidateAddress()
       this.BaseValidateStreet()
@@ -1265,7 +1255,7 @@ export default {
         // 'group_id': this.groupId,
         'orgId': this.orgId,
         'idCard': this.BaseForm.idCard,
-        'pregnantDate': this.BaseForm.lastMensesTime,
+        'pregnantDate': this.BaseForm.lastMensesTime === '' ? '1900-01-01' : this.BaseForm.lastMensesTime,
         'imagedate': this.signatureImage,
         'name': this.BaseForm.name,
         'phoneNumber': this.BaseForm.phone,