To protect portable communication machine even when it drops and when it is carried around.

A protective case comprises a case main body provided with an opening to store a portable phone, a simple portable phone, a portable radio, a portable TV, a portable CD-player-equipped cassette deck, or a portable personal computer (called portable communication machine 7 hereinafter); a lid part 3 opening and closing the opening 2; and locking parts 4, 5 locking the lid part 3 closing the opening 2. The entire case 1 is made of a material having flexibility such that the pushbuttons of the portable communication machine 7 can be pressed one after another, being transparent, and having impact-resisting and- absorbing properties and resiliency resistance.