Low-temperature-resistant and high-safety fuel cell engine

The invention discloses a low-temperature-resistant and high-safety fuel cell engine, and particularly relates to the technical field of fuel engines, the low-temperature-resistant and high-safety fuel cell engine comprises a shell, a through hole is formed in the top of the shell, a protective door is arranged on the front side of the shell, a handle is arranged on the surface of the protective door, an engine is arranged in the shell, and a box body is arranged on one side of the shell; a protective door is arranged on the front face of the box body, a handle is arranged on the surface of the protective door, a heating assembly is arranged in the box body, a conveying pump is arranged on the surface of the engine, one side of the conveying pump is fixedly connected with the surface of the engine, a pipeline is arranged at the bottom of the conveying pump, and a heat exchanger is arranged on the side, away from the conveying pump, of the pipeline. The engine can be protected at the low temperature, the probl