The utility model relates to an oil drilling is along with boring reaming hole technical field, in particular to it is multistage along with boring major diameter reamer. Wall connection lower clutch in the device's the main part lower extreme, main part upper end inner wall connection center pipe, the design has the main part slide on the main part lateral wall, the cutting wing is installed on the main part slide, the cover is equipped with the spring on the center tube, spring outside suit thrust returns the power sleeve, spring upper end top is on center tube external step surface, spring lower extreme top is in the thrust returns the power sleeve on the step face, the thrust returns power sleeve lower extreme and supports on the cutting wing, the thrust returns the power sleeve and can promote to cut inside the wing withdraws the main part along the main part slide. The utility model discloses an along with boring the reaming hole, have the function of bowling many times, can realize the function of the multistage reaming hole of different well sections, the engineering time has been shortened in a brill construction, practices thrift the operating cost, simple structure, the security is high, expands the hole diameter value stably.