Bottle cap locking structure

The utility model relates to the field of bottle cap locking, in particular to a bottle cap locking structure. The bottle cap locking structure comprises a cap body. A surface cap is disposed on the cap body. The bottle cap locking structure is characterized in that the cap body is connected with the surface cap through a fixing shaft center. A fixing ring, a seal ring and a movable-lug latch are disposed on the cap body. Threads are disposed in the fixing ring and fixed on a bottle. The seal ring is in close fit with a bottle body. The movable-lug latch is fixed on the fixing ring by the fixing shaft center which can rotate. One end of the movable-lug latch is provided with a spring back shore. Soft rubber and a protecting latch are disposed on the surface cap. The surface cap is connected with the protecting latch through the fixing shaft center. The bottle cap locking structure has the advantages that the bottle cap locking structure can be operated by a single hand conveniently, and water leakage of the v