The invention provides a method for separating a shell, electrolyte, an electrode material, a collector and the like of a waste zinc-manganese battery by using a physical method, as well as a method for preparing a zinc-manganese soft magnetic ferrite material by taking the electrode material and electrolyte obtained through separation as main raw materials. According to the method, the particularity of the zinc-manganese battery manufactured in different periods is considered, byproducts of sodium salts and ammonia water are generated, and the heat energy of all organic matters contained in the waste battery and all the metal components are recovered. Due to proper control, pollutants are not released into the environment, a low-cost route is provided for resourcing of the waste zinc-manganese battery, and the method is a production technology which accords with the principle of circular economy.