The invention discloses a production method of a 5052 aluminum alloy tank cover base material. The production method of the 5052 aluminum alloy tank cover base material comprises the steps of melting and casting, sawing, surface milling, soaking, (1+4) hot continuous rolling, three-rack cold continuous rolling, cut edge cleaning, and single-rack cold rolling. By the adoption of the production method, it is guaranteed that the mechanical property of the 5052 aluminum alloy tank cover base material is stable and qualified; in addition, the production process is shortened, and the production efficiency is improved.