Heating system of fuel cell vehicle

The invention discloses a heating system of a fuel cell vehicle. The heating system comprises a fixed base and a heating system body, a fuel cell stack is arranged in the middle of the upper surface of the fixed base, the fuel cell stack is sleeved with a protective shell, a junction box is fixedly connected to one side of the upper surface of the protective shell, a high-temperature tail gas exhaust pipe is fixedly connected to one side of the fuel cell stack, one end of the high-temperature tail gas exhaust pipe penetrates through the protective shell and is fixedly connected with an exhaustfan, and the output end of the exhaust fan is fixedly connected with an air supply pipeline. According to the heating system of a fuel cell vehicle, through cooperative arrangement of an exhaust fan,an air supply pipe, an air door, a monitoring module, a control module, a relay and a PTC heater, when warm air is needed, a servo motor is controlled through the control module to open and close theair door, and tail gas gen