A display module includes a front frame, a rear housing, and a trimming board. The front frame includes a first positioning hole and a clamping hole. The rear housing includes a second positioning hole. The front frame is engaged with the rear housing. The second positioning hole communicates with the first positioning hole. The trimming board includes a bolt structure and a clamping structure. The bolt structure is adapted to pass through the first positioning hole and the second positioning hole for preventing the front frame from separated from the rear housing. The clamping hole is used for the clamping structure to pass through and prevent the clamping structure from separating from the clamping hole.