The invention relates to a linkage detection method adopting multi-channel combined probes. According to the method, for a left ultrasonic probe, a middle ultrasonic probe and a right ultrasonic probe, the middle probe is a phased array probe, the left probe and the right probe are conventional probes and are symmetrically distributed relative to the middle probe, probe beams slantly penetrate through an axle in different directions, accordingly, a detection area is located on a near-surface area on the other side of a wheel seat area relative to the middle probe in the radial direction, a center line of the middle probe beams is intersected with an axis of the axle, and left probe beams and right probe beams are symmetric relative to the middle probe beams; when the middle probe detects defect echoes, if one of two echoes, obtained by the left probe and the right probe, in the same area is higher than an echo of a groove and the other one is lower than the echo of the groove, the condition that the area is a crack is determined, if the two echoes, obtained by the left probe and the right probe, in the same area are lower than the echo of the groove and the amplitude heights are basically the same, the condition that the area is not a crack is determined. According to the linkage detection method adopting the multi-channel combined probes, pressing damage or natural crack can be distinguished, so that the omission ratio can be reduced, the detection rate is increased, and the circumferential quantitative precision is improved.