Thanks Alan, it works! \^o^/
So glad to have my dear views back to normal. Seems need to take more time studying camera

The only problem now is, when I create a new scene, the views are still like the ugly one, and I have to reset cameras each time. Could someone tell me how to make my camera attribut settings as default startup settings? I tried to make my own scence as a default new, but that doesn't help. Thanks in advance!