The invention relates to a method for recycling plastic film residues in surface soil, a special rotary plastic film residue picking-up and separating mechanism for the method and a plastic film residue recycling device composed of the special picking-up and separating mechanism. The rotary plastic film residue picking-up and separating mechanism receives a mixed material containing the plastic film residues through a comb chain harrow mechanism (5) vertically arranged on a host frame, heavy sundries fall downward, the plastic film residues are transferred upward by the comb chain harrow mechanism (5), and the plastic film residues are taken off through a film stripping mechanism at the upper portion and collected. Compared with the prior art, the rotary plastic film residue picking-up andseparating mechanism has a very simple structure, and has a two-grade separation function of natural strategy separation and wind power separation; sandy soil and other sundries mixed in plastic filmare greatly reduced, the film stripping method is simple and reliable, the separation effect is good, and the plastic film can be also effectively prevented from winding workpieces.