The embodiment of the invention provides a covering type wire outlet device which comprises a cover board, wherein semicircular slots are formed on two sides of the cover board; and a pedal is connected with the outer surfaces of the two semicircular slots. According to the invention, the covering type wire outlet device can be covered on a combined insulator string, so that a worker can walk on the pedal of the covering type wire outlet device to finish a wire outlet process, and treading and climbing on the combined insulator string are avoided.