The invention discloses a measurement method of a quality center of an abnormal object. The measurement method is characterized by comprising a suspension steel rope, a hook, a to-be-measured abnormal object and a laser graticule device. A laser graticule emitted in the vertical direction in the laser graticule device irradiates on the to-be-measured abnormal object through a suspension point; the to-be-measured abnormal object is rotated; other two feature position points are selected on the laser graticule; identified two feature position points and the corresponding suspension point are found in the corresponding to-be-measured abnormal object data; and a panel is made through the above three points. By repeatedly changing the suspension point for three times, three three-point panels are acquired and the intersection point of the three panels is the actual quality center of the to-be-measured abnormal object.