The invention discloses a power lithium ion battery cover plate and positive electrode end plate boss integrated structure. The integrated structure comprises a cover plate and a lifting boss structure, the cover plate is welded to a battery box, the lifting boss structure is a square taper-shaped or conical structure, and the upper plane of the lifting boss structure is a positive electrode end plate. The power lithium ion battery cover plate and positive electrode end plate boss integrated structure has the following advantages: the lower end of the cover plate is stamped and pulled by usinga die to form the square taper-shaped boss or the conical boss, so the processing process is simple, plastic seal is not needed, processes of component assembling and processing, laser welding between the positive electrode end plate and the cover plate and leak checking are omitted, excessive connection is reduced, the internal resistance is small, and the integrated structure is suitable for high-current charge and discharge; the potential of the cover plate is same to the potential of the positive electrode of a battery, so the internal resistance can be reduced; and the cover plate and the positive electrode end plate are integrally formed without additionally processing the positive electrode end plate, so connection of the positive electrode end plate and the cover plate is avoided,leak checking is avoided, electrolyte leakage is prevented, and the battery has stable performances and a good safety performance.