The invention discloses a quick visual detection technology for plenty of guide holes of small sizes in airplane parts, and belongs to the field of visual detection. According to the technology, the guide hole detection mode that visual detection is combined with a numerical control movement mechanism is adopted, a visual imaging system is mounted at the tail movement end of the numerical control movement mechanism, after the system is calibrated, the movement mechanism drives the visual imaging system to be accurately moved to the appropriate shooting distance position in the hole shaft direction of one guide hole to be detected so as to shoot an image of the guide hole to be detected, a matched image processing algorithm is used for obtaining an actual imaging edge of the guide hole to be detected, a virtual camera technology is used for obtaining a theoretical imaging edge of the guide hole to be detected, actual imaging and theoretical imaging are compared and analyzed, and accordingly hole site detection results are obtained. A quick digitization detection means for plenty of guide hole sites of small sizes in the airplane parts is provided, and the detection precision and the detection efficiency can well meet the digitization detection needs in airplane guide hole manufacturing.