Abstract: A protective case of electronic device comprises a case body and a flexible member. The flexible member has its first end connected with the case body and its second end being in free state. A first combining portion is provided at the second end of the flexible member, and a second combining portion corresponding to the first combining portion is provided on the case body. By means of combination between the first combing portion and the second combining portion, the second end of the flexible member is fixed on the case body and an interlayer is formed between the case body and the flexible member for receiving personal stuffs. Furthermore, as the flexible member itself is flexible, it can be wound and then fixed to form a support structure or to wind and accommodate earphone wire.