Disclosed is a supporting module for a display device, which includes a fixing seat, a pivot lever, a slider and a spring. The pivot lever and the slider constitute a screw transmission mechanism with a varied helix angle. The lifting and lowering of the display device can cause screw motion between the pivot lever and the slider and thus induces the linear movement of the slider according to the axial advance of the varied helix angle. Accordingly, the displacement of the slider causes different degrees of deformation in the spring, resulting in different spring resilience forces on the slider. By the screw transmission mechanism with the varied helix angle, different spring resilience forces can be further converted into different resistance torques to provide appropriate supporting force in coordination with the variation of the gravity torque of the display device.