A support stand for a flat-panel display monitor includes a hinge assembly and a support structure having a top end partially receiving the hinge assembly. The hinge assembly includes a first latching module. The first latching module includes an elastic member and a movable plate connected to the elastic member. The support structure includes a second latching module detachably connected to the first latching module. The second latching module includes a positioning plate having a latching portion extending from a bottom surface thereof. The latching portion is capable of latching with the movable plate. When the movable plate is pressed, the elastic member is deformed so that the second latching module is detached from the first latching module.