diff --git a/app/src/module_community/java/com/yizhuan/erban/community/publish/presenter/PublishPresenter.java b/app/src/module_community/java/com/yizhuan/erban/community/publish/presenter/PublishPresenter.java
index dca3d9237..cd5d2007f 100644
--- a/app/src/module_community/java/com/yizhuan/erban/community/publish/presenter/PublishPresenter.java
+++ b/app/src/module_community/java/com/yizhuan/erban/community/publish/presenter/PublishPresenter.java
@@ -135,7 +135,6 @@ public class PublishPresenter extends BaseMvpPresenter<IPublishView> {
                 .flatMap((Function<String, SingleSource<String>>)
                         path -> FileModel.get().uploadFile(path))
                 .compose(bindUntilEvent(PresenterEvent.DESTROY))
-                .observeOn(AndroidSchedulers.mainThread())
                 .subscribe(new DontWarnObserver<String>() {
                     @Override
                     public void acceptThrowable(String url, Throwable throwable) {
diff --git a/core/src/main/java/com/yizhuan/xchat_android_core/file/FileModel.java b/core/src/main/java/com/yizhuan/xchat_android_core/file/FileModel.java
index c9261bfb2..21a4513a6 100644
--- a/core/src/main/java/com/yizhuan/xchat_android_core/file/FileModel.java
+++ b/core/src/main/java/com/yizhuan/xchat_android_core/file/FileModel.java
@@ -18,6 +18,7 @@ import java.io.File;
 import java.util.UUID;
 
 import io.reactivex.Single;
+import io.reactivex.android.schedulers.AndroidSchedulers;
 import retrofit2.http.GET;
 
 public class FileModel extends BaseModel implements IFileModel {
@@ -57,7 +58,8 @@ public class FileModel extends BaseModel implements IFileModel {
         }
         File finalFile = file;
         String outName = UUID.randomUUID().toString() + PathUtils.INSTANCE.getSuffixType(finalFile.getName());
-        return getCosToken().flatMap(token -> CosClient.INSTANCE.upload(AppUtils.getApp(), finalFile, outName, token).map(cosXmlResult -> cosXmlResult.accessUrl));
+        return getCosToken().flatMap(token -> CosClient.INSTANCE.upload(AppUtils.getApp(), finalFile, outName, token).map(cosXmlResult -> cosXmlResult.accessUrl))
+                .observeOn(AndroidSchedulers.mainThread());
     }
 
     @Override