The invention relates to a plastic film residue picking-up mechanism. The plastic film residue picking-up mechanism is characterized by comprising a picking-up mechanism body and a film removing mechanism; the picking-up mechanism body at least comprises a picking-up shaft; the film removing mechanism comprises a roller (3), end plates (4) are arranged at the two ends of the roller (3), and a track (5) is arranged on at least one side of each end plate (4); the picking-up mechanism body is arranged in the film removing mechanism, the axis of a picking-up shaft (8) and the axis of the roller (3) do not coincide, and an eccentric mechanism is formed; roller fixing bases (6) are arranged on the picking-up shaft (8), at least three sets of supporting wheels A (10) and supporting wheels B (11) are arranged on each roller fixing base (6), the tracks (5) are limited by the supporting wheels A (10) to rotate along the movement locus limited by the supporting wheels A (10), the surfaces of the supporting wheels B (11) are closely attached to the surfaces of the end plates (4), and the roller (3) is limited by the supporting wheels B (11) to move in the axial direction of the roller (3). Compared with the prior art, the plastic film residue picking-up mechanism has the advantages of being simple in structure, low in failure rate and the like.