Cup cover structure of drinking cup

The utility model relates to the technical field of water cup covers, in particular to a drinking cup cover structure which sequentially comprises a top cover, a middle cup cover used for installing an upper straw and a main cup cover in threaded connection with a cup body from top to bottom, the top cover is rotationally connected with the middle cup cover through a rotating shaft, and the middle cup cover is rotationally connected with the main cup cover through a rotating shaft. The middle cup cover is provided with a positioning clamping belt, the positioning clamping belt is fixedly connected with an inverted buckle, the main cup cover is provided with a direct drinking water opening, a lower suction pipe, a fixing base, a button and an outer clamping belt, the upper suction pipe is sleeved with the lower suction pipe, the button is slidably connected with the fixing base, the button is fixedly connected with a reset spring, the inner wall of the positioning clamping belt abuts against the button, and th