The invention discloses a self-regulating type manhole cover. The self-regulating type manhole cover comprises a manhole cover main body, and a manhole cover auxiliary body and an opening degree regulator, which are mounted on the lower side of the manhole cover main body, wherein a plurality of draining holes are formed in the manhole cover main body; a plurality of blocking pieces are arranged on the manhole cover auxiliary body; and the opening degree regulator can regulate the relative positions of the blocking pieces and the draining holes according to the flow rate of water flowing across the manhole cover main body so as to regulate the opening degrees of the draining holes. Through the cooperative action of the manhole cover auxiliary body and the opening degree regulator, the relative positions of the blocking pieces and the draining holes are regulated according to the flow rate of the water flowing across the manhole cover main body so as to regulate the opening degrees of the draining holes, and a function of automatically regulating the opening degrees of the draining holes according to actual draining demands in real time can be realized.