The invention discloses a protective firefighting lance. A high-pressure sprayer assembly is a butterfly valve arranged at the position of a water outlet of a rigid pipe section of a water flow stateadjusting mechanism, and the butterfly valve is connected with a valve hand wheel. The water flow state adjusting mechanism comprises a water flow pipe, three fixed pipe seats and three detachable pipe sleeves. A flexible pipe section is located in a pressure relief mechanism, a water inlet of the flexible pipe section communicates with the outlet end of a water inflow ball valve in a connected manner, a water outlet of the flexible pipe section communicates with a water inlet of the rigid pipe section in a connected manner, one fixed pipe seat and one detachable pipe sleeve are arranged outside each straight pipe section, movable gaps are formed between the detachable pipe sleeves and the end faces of the fixed pipe seats, and multiple through holes are evenly distributed in the pipe wall, corresponding to the positions of the gaps, of the rigid pipe section along the circumference at intervals. The water inflow ball valve comprises a valve body, a valve element, a handle and an uppergrabber. The protective firefighting lance has a multi-protection function, the personal safety can be guaranteed, recoil of the lance device is eliminated, and the rescue efficiency is improved in an assisted manner.