An electronic device with a concealed coupling member includes a first shell, a second shell, and at least one locking mechanism. The first shell includes a sidewall with a first through hole. Each locking mechanism includes a chassis, a screw, a first coupling portion, and a second coupling portion. The first coupling portion defines a second through hole, the second coupling portion defines a third through hole. The first through hole can communicate with the second through hole and the third through hole. The screw passes through the third through hole and the second through hole to couple the first shell to the second shell.