Water hose releasing device, fire-fighting robot and water hose releasing method

The invention provides a water hose releasing device, a fire-fighting robot and a water hose releasing method, and the water hose releasing device comprises a water inlet assembly which comprises a water inlet pipe and a male connector which are connected in sequence; the tripping assembly comprises a tripping sleeve, an elastic reset piece and a driving sleeve arranged outside the tripping sleeve in a sleeving mode, the water inlet end of the male connector penetrates through the tripping sleeve and is used for being connected with a female connector with a water hose in a buckled mode, the driving sleeve is used for generating a magnetic field, and the tripping sleeve can compress the elastic reset piece under magnetic force driving and push the female connector to be tripped. The elastic reset piece is used for driving the tripping sleeve to reset. According to the water hose tripping device, automatic tripping and resetting operation can be achieved only through magnetoelectric on-off, compared with manua