The invention relates to the technical field of lead-contained waste recovery, and discloses a method for preparing four-base type lead sulfate through acid leaching lead slime. The method for preparing the four-base type lead sulfate through the acid leaching lead slime includes the steps that (1) the acid leaching lead slime is pretreated; (2) the contents of lead oxide, free lead and lead sulfate in the acid leaching lead slime are determined; (3) the ingredients of the four-base type lead sulfate are prepared by the acid leaching lead slime; and (4) the four-base type lead sulfate is prepared. According to the method for preparing the four-base type lead sulfate through the acid leaching lead slime, the high purity four-base type lead sulfate is prepared by the acid leaching lead slimeand directly applied to battery paste mixing coating plates, after drying, coated pole plates can be directly subjected to piece distributing and brushing, piece weighing and plate packaging to assemble batteries, the curing process of traditional lead powder paste mixing coating plates is reduced, energy consumption is saved, and battery manufacturing costs are lowered; and the net structure ofthe four-base type lead sulfate formed by the pole plates made by the four-base type lead sulfate prepared by the method is solid, direct binding force between lead pastes and between the lead pastesand grids is firm, and the battery cycle life is longer than that of traditional batteries.