The present invention is directed to a thin aqueous cataplasmprepared by laminating an adhesive layer (base) having specifiedconstituents on a support which consists of a fiber film prepared byheat-fusing a soft plastic resin on a composite fiber prepared byentangling a natural fiber and a soft plastic fiber, or consists of afiber film prepared by heat-fusing a plastic resin having a soft partand a hard part in common on a fiber consisting of a plastic having asoft part and hard part in common. The thin aqueous cataplasmretains a moisture-protecting effect on the skin and provides acomfortable feeling when in use.