The invention provides a fuel cell system structure having hydrogen circulation and heat exchange functions. The fuel cell system structure comprises at least one fuel cell stack, an intermediate connection plate, a hydrogen convergence box, a hydrogen circulation pump, a gas-liquid separator and a heat preservation pipeline, wherein the intermediate connection plate is fixedly connected with theat least one fuel cell stack, an end surface of the intermediate connection plate is connected with a hydrogen inlet/outlet passage and a cooling liquid outlet of a front end plate, a hydrogen total inlet, a hydrogen total outlet and a cooling liquid total outlet are arranged in the other end surface of the intermediate connection plate, the hydrogen convergence box is arranged around the hydrogentotal inlet, a hydrogen outlet formed in one side of the hydrogen convergence box is connected with the cooling liquid inlet, the hydrogen total inlet and the cooling liquid outlet, a humid hydrogeninlet, and a dried hydrogen inlet and a cooling liquid outlet are arranged in the other side of the hydrogen convergence box. A component having an integration function is employed, the hydrogen circulation pump and the heat preservation pipeline are utilized, high-efficient utilization of hydrogen is achieved, and minimum volume of the fuel cell system is achieved as well as the high-power outputperformance of the fuel cell system is improved.