Abstract: Diesel particulate filter( DPF) is one of the most effective after-treatment technologies for diesel exhaust particulate pollution． It is a important measure to meet strict automotive diesel engine emission regulations in the future． DPF purification mechanism was introduced in this paper． The research status of the regeneration technologies of DPF in recent years were discussed and various regeneration technologies principle and its existing problems were discussed． At last，the research direction of DPF regeneration technologies in the future was put forward