Water gun nozzle connecting structure and water gun

A water gun nozzle connection structure and a water gun are provided. The water gun nozzle connecting structure comprises a gun rod, a nozzle and a button, wherein the gun rod comprises a rod body and an inner connecting column, a nozzle interface is arranged at the water outlet end of the rod body, the inner connecting column is arranged in the nozzle interface, a button mounting hole is further formed in the rod body, the button is installed in the button mounting hole, an inserting portion is formed at one end of the nozzle, an annular groove is formed in the inserting portion, the inserting portion can be connected to the inner connecting column and used for forming a water flow passage, the button comprises a through hole, the inner connecting column and the inserting portion pass through, the button further comprises a locking tongue portion, and the locking tongue portion is formed at the edge of the through hole and can be buckled to the annular groove and used for locking the nozzle in the nozzle interface.