Lock catch structure of cup cover and cup

The lock catch structure of the cup cover is characterized by comprising a cover body, a turning cover and a locking piece, one end of the turning cover is connected to the cover body in a rotating mode, an installation hole is formed in the side wall of the cover body in the radial direction of the cover body, a cover opening button moving in the radial direction of the cover body is arranged in the installation hole, and a reset spring is arranged between the cover opening button and the inner wall of the installation hole. The other end of the turning cover is provided with a clamping groove matched with the cover opening button in a clamping mode, a rotating shaft is arranged in the mounting hole, the locking piece is arranged on the rotating shaft in a sleeving mode and rotates with the rotating shaft as the axis so that the locking piece can be switched between an unlocking position and a locking position, the cover opening button is provided with a locking groove, and when the locking piece is located