The utility model discloses an X-ray machine nesting mechanism device for detecting a dry type transformer, and relates to the field of X-ray machine detecting mechanism devices. In the utility model,a first adjusting screw rod is movably arranged on a first supporting main plate block; The third inclined fixed connecting plate is fixedly connected with a second longitudinal fixed connecting plate provided with a longitudinal adjusting groove; A bottom side adjusting screw rod is movably arranged on the fourth bottom side fixing connecting plate; And a tension spring is connected between oneend side of the first buckle movable plate and the third inclined fixed connecting plate. According to the utility model, the supporting mechanism of the X-ray machine can be adjusted to a proper height through the first adjusting turntable; the first buckle movable plate is buckled on the end side fixed clamping plate of the dry-type transformer; By adjusting the bottom rod adjusting disc, the fourth bottom side fixing connecting plate is firmly contacted with the chassis of the dry-type transformer, so that the supporting mechanism of the X-ray machine can be stably mounted on the dry-type transformer, and the X-ray machine can stably and effectively detect the dry-type transformer.