Abstract: Thermoplastic elastomers(TPEs)are of rubber elasticity at room temperature，and capable of being processed at high temperature like thermoplastics. Due to such excellent performances，TPEs have been widely used in many industry fields and commercial applications. However，the inherent molecular structures of TPEs lead a high flammability with dripping during the flaming fire, which limits their utilization. In recent years，with the improvement of requirements in flame-retardant and environmental performances of materials，more and more researches have been focused on the halogen-free flame retardant TPEs. The present work summarized the latest research development of the halogen-free flame retardant thermoplastic polystyrene elastomers，polyurethane elastomers and olefin elastomers.