The invention discloses an underpan system of a distributed pure electric vehicle. The underpan system comprises a vehicle wheel independent driving system, a vehicle wheel independent steering system, a motor mounting bracket, a steering motor, a steering gear mechanical interface, an axle shaft, vehicle wheels, a suspension system and a braking system. The steering gear mechanical interface is connected with the output end of a vehicle built-in steering motor assembly, one end of a suspension is connected with the vehicle wheels, and the other end of the suspension is connected with a vehicle frame; and a driving motor is fixed to the vehicle frame, and the vehicle wheels are driven to rotate by the axle shaft. According to the underpan system of the distributed pure electric vehicle, the underpan design of the pure electric vehicle where all the vehicle wheels are independently driven to steer independently is achieved, further all driving functions of an ordinary vehicle can be achieved, meanwhile interfaces and elements which are commonly used in an existing vehicle suspension system are reserved as much as possible, and good transportability is achieved.