The invention discloses a filtering type oil retainer and belongs to the technical field of motor lubricating oil recovery. The filtering type oil retainer comprises an outer circular piece; an innercircular piece is arranged in the outer circular piece in an interference fit mode; a plurality of oil troughs are formed in the inner side wall of the inner circular piece; convex blocks are arrangedbetween the adjacent oil troughs; the upper end faces of the convex blocks are arranged obliquely; the convex blocks are provided with a plurality of oil return channels through which the multiple oil troughs are connected; the multiple oil return channels on the adjacent convex blocks are arranged in a staggered mode; a filtering net is arranged in each oil return channel; and the bottom of eachoil trough is in a concave-convex mode. By means of the filtering type oil retainer, the problems that as lubricating oil is collected by connecting an oil collector to a current oil retainer for motors, the lubricating oil goes bad and cannot be recycled and the oil retainer is prone to being damaged are solved, and the filtering type oil retainer has the advantages that oil returns quickly andthoroughly.