Abstract: The recovery and utilization of waste rubber is discussed in this paper. The cryogenic comminution technology has the advantages of less pollution, low power consumption, etc. and is widely used. The restraints of high energy consumption and large exergy consumption of the actual cryogenic comminution technology and the corresponding solutions are presented. In China the technology of LNG cryogenic energy utilization can be used for rubber comminution. It not only decreases the production cost of rubber comminuting but also makes full and effective use of LNG resources .