Image not showing in Qlabel after compiling

I'm trying to display an image in Qt from using the label,but the image just cannot showing after compiling. This is what I've done here;
1.I've added a label(in designer,not the .cpp file),and added an image in the label.
2.I did not add the image as a source,and directly add a image.

ps. I'm A CHINESE,so if feel wired about my words.......forgive me.;)Attachment 12859Attachment 12860

You should create a ressource containing your image to add image, it is safer and will prevent some error.
Here's the documentation : http://doc.qt.io/qt-5/resources.html