A bolt impactor facilitating construction of a slit wedge tubing bolt by a drill jambo is a round tube which is 300 mm long, has an outer diameter of 56 mm and an inner diameter of 36 mm and is made of 40# chromium steel; two layers of annular steps are processed between an inner wall and an outer wall of a left port of the round tube, and the distance from the left end surface of the round tube to the slope of the second layer of step is 1 mm; the height of each of the first layer of step and the second layer of step is 5 mm; the slope of the first layer of step is an arched surface; a slope angle of the second step of step is 90 degrees; the front end of the slit wedge tubing bolt is aligned to a well-constructed bolt hole by the drill jambo by means of the bolt impactor, after the slit wedge tubing bolt is pushed into the hole through propelling pressure, the drill jambo is started again for low impact, the bolt is completely sent into the drill hole under the action of appropriate propelling pressure and low impact, so far, the drill jambo completes construction of the slit wedge tubing bolt by means of the bolt impactor, and finally, the drill jambo has the function of construction of the slit wedge tubing bolt.