The invention discloses a hand-held-type omnibearing firefighting water gun. The hand-held-type omnibearing firefighting water gun comprises a water bag interface, a switch, a rotatable gun seat, a gun seat fixed body, a gun seat rotary body, a gun cylinder, a rotatable gun head, a gun head fixed body, a gun head rotary body, a regulating mechanism and the like. The hand-held-type omnibearing firefighting water gun is characterized in that the water bag interface is connected to the rear end of a switch; the front end of the switch is connected with the gun seat fixed body of the rotatable gun seat; the rear end of the gun cylinder is connected to the gun seat rotary body of the rotatable gun seat; the front end of the gun cylinder is horizontally connected with the gun head fixed body of the rotatable gun head; a gun nozzle is horizontally connected with the gun head rotary body of the rotatable gun head; the regulating mechanism is installed on the gun cylinder and the gun head rotary body of the rotatable gun head. During the firefighting process, the angle of the gun nozzle of a water gun can be regulated freely within the longitudinal 0-130 degrees of the gun cylinder, meanwhile the gun nozzle of the water gun can rotate randomly for 360 degrees horizontally along with the gun cylinder; water flow can be ejected in an omnibearing and multi-angle way at any place as long as the gun head can extend in. The hand-held-type omnibearing firefighting water gun is simple in structure, can effectively reduce the danger of firefighters, can improve the firefighting efficiency, and can reduce the property loss.