The utility model discloses an exhaust phase shifter bolt assembling clamp. The problem that the manual steps are complicated when the exhaust phase shifter is assembled is solved; the problem that exhaust phase shifters of various models are not suitable for being assembled and are easy to shake during assembly is solved; key points of the technical scheme are as follows: the key points are as follows; the utility model discloses an exhaust phase shifter bolt assembling clamp. The device comprises a base and an exhaust phase shifter, the device further comprises a base table and a driving device. The base table is arranged in the middle of the base. A fixing base is arranged in the middle of the base table. A connecting area is arranged in the middle of the fixing base. Grooves are formedin the two sides of the fixing base, fixing pins are installed in the grooves, tensioning mechanisms are arranged at the joints of the fixing pins and the grooves, the driving devices are installed on the two sides of the base table, telescopic rods are arranged at the upper ends of the driving air cylinders, pressing claws are riveted to the upper ends of the telescopic rods, and the purposes ofautomatically fixing exhaust phase shifters of various types and improving the assembling precision are achieved.