An electronic device including a main body, a cap body, a flexible printed circuit board and a protection cover is provided. The cap body disposed on the main body is capable of moving between a first position and a second position on the main body and rotating with respect to the main body in the second position. The flexible printed circuit board connects to the main body and the cap body. The protection cover is slidably disposed on the cap body and has a receiving space. When the cap body rotates in the second position, part of the flexible printed circuit board is within the receiving space and protected by the protection cover.