The invention discloses a clean, sanitary and easy-clean sleeping bag base on outdoors. The sleeping bag comprises a sleeping bag body. The sleeping bag comprises a sleeping bag bottom layer and a sleeping bag upper layer, and a head putting end and a feet putting end; the head putting end and the feet putting end are respectively provided with at least two bottom layer fixing positions in the sleeping bag bottom layer; the head putting end is provided with at least two upper layer fixing positions in the sleeping bag upper layer; the sleeping bag bottom layer and the sleeping bag upper layer of the feet putting end are connected by a zipper. Each of the bottom layer fixing positions is provided with a bottom layer rope; each of the upper layer fixing positions is provided with an upper rope. The clean, sanitary and easy-clean sleeping bag base on outdoors also comprises a sleeping lining matched with the fixing way of the bag; there are at least two linings. The design of lining separation is used, through the movable lining design, the unsanitary situation is avoided; by adding the fixing positions between the bottom layer and the upper layer of the sleeping bag, the sleeping bag lining is fixed. The design is sanitary and very easy to replace.