TPEE, a thermoplastic polyester elastomer, is a block copolymer containing a hard and soft polyester segment of polyester. Among them, the soft segment of polyether and the uncrystallized polyester form an amorphous phase, and the hard segment of polyester partially crystallizes to form a crystalline micro-area, which plays the role of a physical cross-linking point. TPEE has the elasticity of rubber and the strength of engineering plastics; The soft segment gives it elasticity and makes it rubber-like; The hard section gives it processing properties and makes it like plastic; Compared with rubber, it has better processing properties and longer service life; Compared with engineering materials, it also has the characteristics of high strength. TPEE has the characteristics of high strength, high elasticity, oil resistance, acid and alkali resistance, high temperature resistance, radiation resistance, excellent dynamic mechanical properties and environmental protection.