To provide an assembly comprising an edible-oil cleaning agent and a container, and a purification method of edible-oil using same. A combined container body for enclosing an edible-oil cleaning agent, configured from a container having a non-woven fabric bag and multiple pores for accommodating one or more of the bag, and a stainless steel casing provided with a stainless steel handle. The container body is used by being introduced to edible oil in an oil bath and being removed from the edible-oil, and is also used in a manner such that the enclosed cleaning agent makes contact with heated edible-oil in an oil bath.