The present invention relates to a part integration detection method and system. The method comprises the following steps: according to the requirements of the detection technology, according to a given servo feed instruction, a light source, an industrial camera and a laser sensor are moved to a detection position driven by the horizontal movement of an X motion axis and a Y motion axis and the vertical movement of a Z motion axis; the industrial camera collects contour images of assigned detection points of parts to be detected, the industrial camera shoots the parts to be detected and then the images are uploaded to a computer; the computer is employed to perform image processing of the images to obtain shapes, sizes and positions of the contours of the parts to be detected; and the laser sensor emits laser to the surfaces of the parts to be detected to obtain laser signals and the laser signals are transmitted to the computer, the computer analyzes and processes the laser signals to obtain the bumping sizes of the parts to be detected, such as the thickness, the flatness, the hole depth, the boss height, the gradient and the like. The part integration detection method and system integrates high technologies such as servo control, machine vision, laser detection, information processing to realize multi-parameter and high-precision detection of parts.