The invention discloses a baking torch device of a ship steel structure. The baking torch device comprises a baking torch body; a first welding nozzle is fixed at one end of the baking torch body, anda second welding nozzle is fixed at the same end of the baking torch body and is close to the lower part of the first welding nozzle; and a spring automatic reset ball valve is fixed inside the baking torch body, and a ball valve handle is rotationally connected to the outer side wall of the spring automatic reset ball valve. According to the baking torch device, the baking torch body is connected to an external gas tank, if the gas flows normally, an impeller and a rotating rod can be driven to rotate, and if the gas cannot be normally fed, the impeller and the rotating rod are static or slowly rotate, so that the checking operation is convenient for a worker; a hook-and-loop belt is bound on the arm of the worker, so that the baking torch body is prevented from slipping out of the handof the worker, and the worker can adjust the spring automatic reset ball valve by rotating the ball valve handle to change the size of the flame; and the ball valve handle can also be held to supportthe baking torch body, and a layer of anti-skid layer is coated on the handle, so that the device is prevented from slipping out of the hand.