The invention discloses a flyknit vamp deformation detection method based on visual identification. The method includes the following steps: setting marker points having comparison on a to-be-cut part of a flyknit vamp, acquiring the position information of the marker points in combination with the visual identification technology, based on the position information of the marker points, conducting threshold value processing to obtain vamp tensile deformation and torsion deformation, and determining whether the tensile deformation and the torsion deformation respectively fall to a tensile deformation threshold value range and a torsion deformation threshold range so as to determine whether the flyknit vamp is qualified. Compared with manual detection, the detection method herein realizes automatic detection, has high detection efficiency, eliminates influence of manual factors, and has high detection stability.