The invention provides a tracking method for an electric automobile auxiliary lane changing trajectory based on the Internet of Vehicles and belongs to the field of automobile active safety and auxiliary driving. The travel motion state and surrounding environment information of an automobile are acquired in real time through an Internet of Vehicles system, and a lane changing and overtaking trajectory is planned dynamically in real time based on the current information obtained currently; a lane changing and overtaking trajectory tracking control model is established based on the information acquired through the Internet of Vehicles system; an expectation state fuzzy slip mode adjustment and control method for auxiliary lane changing of the electric automobile is designed, and the expected force and expected moment required for auxiliary lane changing trajectory tracking control are obtained; a tire force control and distribution method of the electric automobile is designed, and transverse force and longitudinal force of each wheel of the electric automobile are dynamically planned according to the expected total longitudinal external force, the expected total transverse external force and the expected transverse swing moment; and a converter for the slip angle and the slip rate of tires is designed, the expected tire transverse force and the expected tire longitudinal force are converted into the controllable slip angle and the controllable slip rate, an execution controller is designed, and execution control over the slip angle and the slip rate of the tires is achieved.