Abstract: Film has keeping moisture，improving soil temperature，inhibiting weeds growth and increasing production effects，so it has been widely applied.And film has greatly promoted development of China′s agricultural economy.But plastic film residue in soil is extremely difficult to degrade，which cause great harm to agricultural production and ecological environment.Remnant membrane recycling has great significance for protection of farmland and improving farmland ecological environment.Current research status and research methods of remnant membrane recycling technology at home and abroad were summarized.Main problems existing in remnant membrane recycling machines in China were pointed out.Suggestions of implementing residual film recovery technology of mechanization were put forward.It provided a theoretical basis for mechanical recovery of residual film.