The invention discloses a storage battery cover with an improved safety valve. The storage battery cover with the improved safety valve comprises a cover body and a cover plate and is characterized in that a cavity is formed in a top end surface of the cover body, grooves matched with the cover plate are formed in the two sides of the cavity, the cover plate is inserted into the cavity of the cover body through the grooves, a buffer slope is arranged at the front end of the cover plate, the safety valve is arranged in the cavity and comprises a plastic shell, a rubber column, a rubber gasket and a liquid stopping plate, and a flame retardant plate is also arranged at the upper end of the liquid stopping plate. The storage battery cover with the improved safety valve has the advantages that the front end of the cover plate cannot prop against the safety valve, and the quality of a storage battery is ensured; the fire-proof and explosion-proof function of the storage battery is improved, and the safety performance of the safety valve is improved.