The invention discloses a sagger used for high temperature reaction of a positive electrode material for a lithium ion battery, and relates to the technical field of auxiliary devices of roller way kiln furnaces of positive electrode materials for lithium ion batteries. The sagger used for high temperature reaction of the positive electrode material for the lithium ion battery comprises a sagger body, the sagger body comprises a sagger bottom and sagger walls arranged on the periphery of the sagger bottom in a surrounding mode; and circulating openings are formed in the sagger walls, and circulating grooves are formed in the lower surface of the sagger bottom. According to the sagger used for high temperature reaction of the positive electrode material for the lithium ion battery, the circulating openings are formed in the sagger walls, and the circulating grooves are formed in the sagger bottom, so that the atmosphere circulating effect is enhanced when the sagger bodies are overlapped, the high temperature reaction effect of a lower layer material is improved, alkaline gas discharging is facilitated, the life of the sagger body is greatly prolonged, and the production cost is reduced.