Unlocking device and unlocking method of optical module

The invention discloses an unlocking device and an unlocking method of an optical module, the unlocking device of the optical module comprises a pull plug, a cover plate, a cam disc and an unlocking block; the pull plug is elastically clamped on the coordination platform in a sliding manner and is in running fit with the cam disc; the cam disc is rotationally installed in the containing groove, the unlocking block is elastically installed in the containing groove in a sliding mode, and the cam disc abuts against the unlocking block. According to the optical module, the containing groove formed in the base of the optical module is used as an unlocking or locking operation area, the cam disc and the unlocking block are installed in the containing groove in a matched mode, then the pull plug is assembled on the cam disc in a rotating mode and installed on the base in a sliding and matched mode, and finally the base is packaged through the cover plate. According to the device, the pulling plug is of a straight pu