diff --git a/src/EventAPI/forms.py b/src/EventAPI/forms.py
index 6f478a26..2c82640d 100644
--- a/src/EventAPI/forms.py
+++ b/src/EventAPI/forms.py
@@ -19,9 +19,12 @@ class Meta:
             'DisplayArticleType': _("选择活动介绍所要显示的文章来源"),
             'relatedArticles': _("若文章来源选择为Blog，则此项必填"),
             'WechatArticleUrl': _("若文章来源选择为WeChat，则此项必填"),
-            'WechatQRcode': _("若文章来源选择为WeChat，则必须提供文章对应的微信公众号"),
-
+            'WechatQRcode': _("若文章来源选择为WeChat，可提供文章对应的微信公众号的二维码"),
 
+            'pastEventLink': _("可以为空"),
+            'recentEventLink': _("可以为空"),
+            'pastEventPoster': _("可以为空"),
+            'recentEventPoster': _("可以为空"),
         }
         widgets = {
             'eventInfo': forms.Textarea(attrs={'rows': 3}),
@@ -42,7 +45,7 @@ def clean(self, *args, **kwargs):
         display_article_type = self.cleaned_data.get('DisplayArticleType')
         wechat_qr_code = self.cleaned_data.get('WechatQRcode')
 
-        if (display_article_type == 'WeChat' and (wechat_article_url == None or wechat_qr_code == None)) or (display_article_type == 'Blog' and related_articles == None):
+        if (display_article_type == 'WeChat' and (wechat_article_url == None)) or (display_article_type == 'Blog' and related_articles == None):
             errors.append(ValidationError(_(mark_safe('<li>文章显示设置不正确，请检查相关设置项</li>')), code='invalid article display setting'))
 
         event_actualSt_time = self.cleaned_data.get("eventActualStTime")
diff --git a/src/EventAPI/migrations/0020_auto_20211120_2339.py b/src/EventAPI/migrations/0020_auto_20211120_2339.py
new file mode 100644
index 00000000..19166a9f
--- /dev/null
+++ b/src/EventAPI/migrations/0020_auto_20211120_2339.py
@@ -0,0 +1,33 @@
+# Generated by Django 3.1.12 on 2021-11-20 12:39
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('EventAPI', '0019_auto_20190509_0759'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='event',
+            name='pastEventLink',
+            field=models.URLField(default=None, null=True, verbose_name='往期活动链接'),
+        ),
+        migrations.AddField(
+            model_name='event',
+            name='pastEventPoster',
+            field=models.ImageField(default=None, null=True, upload_to='uploads/usrImage/eventPastVisual', verbose_name='往期活动海报'),
+        ),
+        migrations.AddField(
+            model_name='event',
+            name='recentEventLink',
+            field=models.URLField(default=None, null=True, verbose_name='近期活动链接'),
+        ),
+        migrations.AddField(
+            model_name='event',
+            name='recentEventPoster',
+            field=models.ImageField(default=None, null=True, upload_to='uploads/usrImage/eventRecentVisual', verbose_name='近期活动海报'),
+        ),
+    ]
diff --git a/src/EventAPI/models.py b/src/EventAPI/models.py
index 7fcd6875..ba4887ca 100644
--- a/src/EventAPI/models.py
+++ b/src/EventAPI/models.py
@@ -109,6 +109,13 @@ class Event (models.Model):
     WechatArticleUrl = models.CharField(verbose_name=_("微信公众号文章链接"), max_length=500, default=None, null=True, blank=True)
     WechatQRcode = models.ImageField(verbose_name=_("微信二维码"),upload_to='uploads/usrImage/eventWechatQRcode',default=None ,null=True, blank=True)
 
+    # 近期、往期活动的链接和海报
+    pastEventLink = models.URLField(verbose_name=_("往期活动链接"), default=None, null=True)
+    recentEventLink = models.URLField(verbose_name=_("近期活动链接"), default=None, null=True)
+
+    pastEventPoster = models.ImageField(verbose_name=_("往期活动海报"), upload_to='uploads/usrImage/eventPastVisual', default=None, null=True)
+    recentEventPoster = models.ImageField(verbose_name=_("近期活动海报"), upload_to='uploads/usrImage/eventRecentVisual', default=None, null=True)
+
     disabled = models.BooleanField(default=False)
 
     def __str__(self):
diff --git a/src/EventAPI/serializers.py b/src/EventAPI/serializers.py
index 3a343b50..61f79b0e 100644
--- a/src/EventAPI/serializers.py
+++ b/src/EventAPI/serializers.py
@@ -3,8 +3,14 @@
 
 class EventsSerializer(serializers.ModelSerializer):
 
+    def get_eventTaker(self, instance):
+        return instance.eventBy.eventTakerName if instance.eventBy else None
+
+    def get_eventType(self, instance):
+        return instance.eventTypes.typeName if instance.eventTypes else None
+
     class Meta:
       model = eventModels
       fields = ('eventID','eventName','eventInfo','mainVisual','address','venue','isFree','price',
-                'eventBy','eventTypes')
+                'pastEventLink', 'pastEventPoster', 'recentEventLink', 'recentEventPoster',)
       
\ No newline at end of file
diff --git a/src/EventAPI/templates/EventAPI/add_event.html b/src/EventAPI/templates/EventAPI/add_event.html
index 77e36213..1e0fedec 100644
--- a/src/EventAPI/templates/EventAPI/add_event.html
+++ b/src/EventAPI/templates/EventAPI/add_event.html
@@ -102,7 +102,7 @@
 
 <script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-fileinput/4.5.1/themes/fa/theme.min.js"></script>
 <script>
-    $('#id_mainVisual, #id_WechatQRcode').fileinput({
+    $('#id_mainVisual, #id_WechatQRcode, #id_pastEventPoster, #id_recentEventPoster').fileinput({
 			theme: "fa",
 	        allowedFileExtensions: ['jpeg','jpg', 'png'],
 	        overwriteInitial: false,
diff --git a/src/EventAPI/views.py b/src/EventAPI/views.py
index 896f42a4..b8ae22ee 100644
--- a/src/EventAPI/views.py
+++ b/src/EventAPI/views.py
@@ -1,5 +1,7 @@
 from django.shortcuts import render, get_object_or_404, Http404
 from django.db.models import Q
+from rest_framework import permissions
+from rest_framework.decorators import permission_classes
 
 from .models import *
 from .forms import *
@@ -268,41 +270,34 @@ def filter_queryset(self, qs):
 ########Start###################### Event API for mobile App ##################Start###################
 from rest_framework.views import APIView
 from .serializers import EventsSerializer
-import base64, json
-from django.core.serializers.json import DjangoJSONEncoder
-# from rest_framework.response import Response
-# from django.core import serializers
+from rest_framework.response import Response as RestResponse
+
+def query_events():
+    return Event.objects \
+        .select_related('eventBy', 'eventTypes') \
+        .order_by("eventActualStTime")
 
 class MobilePastEventAPI(APIView):
+    permission_classes = [permissions.AllowAny]
+
     def get(self, request, format=None):
         sys_time.activate('Australia/Melbourne')
         now_time = sys_time.now()
-        eventsPast= Event.objects.filter(eventActualStTime__lt=now_time).order_by("eventActualStTime")    
+        eventsPast= query_events().filter(eventActualStTime__lt=now_time)    
         
         # queryset是实例集合，需要加 many=True ，如果是单个实例，可以不用加 many=True
         serializer = EventsSerializer(eventsPast, many = True)
-        
-        # data = serializers.serialize("json",serializer.eventsPast) # 直接序列化成json形式
-
-        # 两种返回方法都行，下面一种需要设置，设定已标注
-        # In order to allow non-dict objects to be serialized set the safe parameter to False
-        data = json.dumps(serializer.data, cls=DjangoJSONEncoder)
-        # 这里需要加encode()才能通过base64进行编码
-        data_encode = base64.b64encode(data.encode())
-        # return JsonResponse(serializer.data, safe=False)
-        return HttpResponse(data_encode, content_type="text/plain")
-
+        return RestResponse(serializer.data)
 
 class MobileFutureEventAPI(APIView):
+    permission_classes = [permissions.AllowAny]
+
     #原理同上   
     def get(self, request, format=None):
         sys_time.activate('Australia/Melbourne')
         now_time = sys_time.now()
-        eventsFuture = Event.objects.filter(eventActualStTime__gt=now_time).order_by("eventActualStTime")
+        eventsFuture = query_events().filter(eventActualStTime__gt=now_time)
         serializer = EventsSerializer(eventsFuture, many = True)
-        data = json.dumps(serializer.data, cls=DjangoJSONEncoder)
-        data_encode = base64.b64encode(data.encode())
-        return HttpResponse(data_encode, content_type="text/plain")
-
+        return RestResponse(serializer.data)
 
 ########End######################## Event API for mobile App ######################End##############
\ No newline at end of file
diff --git a/src/PublicSite/templates/PublicSite/eventDetails.html b/src/PublicSite/templates/PublicSite/eventDetails.html
index 82799b9f..602074b4 100644
--- a/src/PublicSite/templates/PublicSite/eventDetails.html
+++ b/src/PublicSite/templates/PublicSite/eventDetails.html
@@ -93,12 +93,14 @@ <h5 class="card-title"><strong>{{events.eventName}}</strong></h5>
             </div> -->
             <div class="row justify-content-center text-center">
               <p>详情请见: <a href="{{events.WechatArticleUrl}}" class="text-primary">&nbsp&nbsp&nbsp<u> {{events.WechatArticleUrl}}</u></a>
+              {% if events.WechatQRcode %}
               <br>
              报名后请扫小助手二维码哦!
               <br>
               小助手二维码
               <br>
               <img src="{{events.WechatQRcode.url}}" alt="{{events.eventName}}" class="img-thumbnail rounded mx-auto d-bloc" style="min-width:150px; max-width:250px; margin-top:10px">
+              {% endif %}
               </p>
               </div>