Button water cup lid capable of being detached for washing and operated with one hand

The utility model discloses a button water cup lid capable of being detached for washing and operated with one hand. The button water cup lid comprises a lid body (2) fixed with a cup body (1), a connecting rod (3), a button (6), a return spring (8), a button sealing ring (7) and a positioning piece (10), wherein the button (6) is sleeved by the return spring (8) and then mounted in a mounting hole (2h); the button sealing ring (7) is mounted in a groove (6a) and in seal fit with a through hole sealing surface (2c); the positioning piece (10) is mounted on segmented threads (2f) in the lid body (2); a positioning hole (10c) is formed in the center of the positioning piece (10); a water outlet (5) is formed in the top of the lid body (2); a U-shaped clamping groove (3d) is formed in one end of the connecting rod (3); a notch (6f) of a connecting rod clamping column (6b) is clamped in the U-shaped clamping groove (3d); a water sealing plug (4) matched with the water outlet (5) is formed in the other end of the connecting rod (3); a circular ball supporting pivot (3b) is arranged at the lower part of the connecting rod (3), and formed in the positing hole (10c) of the positioning piece (10). The button water cup lid has the advantages of being simple and reasonable in structure, convenient to operate and use, capable of being detached for washing and filtered, and the like.