Aiming at the parallel parking path planning and tracking control problem for the wire-four-wheel steering vehicle，a novel parallel parking path planning method is proposed based on the improved particle swarm optimization algorithm，and a novel parallel parking path tracking control strategy is proposed based on feedforward and feedback control architecture. Firstly，considering the kinematic non-holonomic constraint of the wire-four-wheel steering vehicle，the process and boundary constraints of the power and steering sub-systems，the obstacle avoidance constraint，the initial parking pose constraint and the target pose constraint，a parallel parking path planning constraint optimization problem with minimizing the parking time is established，and the particle swarm optimization，which can deal with the equality and inequality constraints，is adopted to solve the constraint optimization problem. In order to execute the planned parking path，the desired wheel steering angle is used as the feedforward control quantity，and the PI feedback control quantity is constructed based on the deviation between the actual pose and the expected pose of the vehicle. Finally，the model-in-the-loop simulation system is built based on vehicle dynamics simulation software to verify the feasibility and effectiveness of the proposed method，and the simulation results show that the proposed method can guide the wire-four-wheel steering vehicle to complete the parallel parking task quickly，accurately and stably.