A cushion case for mobile computer is provided. The cushion case for mobile computer comprises a perimeter belt padding and a panel padding. The perimeter belt padding has two lateral side padding portions, a bottom padding portion, and a lid padding portion. The panel padding has a top panel padding portion and a base panel padding portion. The perimeter belt padding is sewn onto the panel padding, and the two lateral side padding portions form two lateral side walls of the cushion case, the bottom padding portion forms the bottom side wall of the cushion case, the lid padding portion forms the lid of the cushion case and is capable of being opened and closed, the top panel padding portion forms the top panel wall of the cushion case, and the base panel padding portion forms the base panel wall of the cushion case.