Drilling corrector and method

The invention relates to a drilling corrector and a method. The technical scheme provided by the invention is that the drilling corrector comprises a drilling rod, a drilling bit, a collimator, a first pressure sensor, a second pressure sensor and a singlechip microcomputer, wherein the drilling bit and the drilling rod are in threaded connection; the collimator is arranged at the lower end of the drilling bit; the first pressure sensor, and the second pressure sensor and the singlechip microcomputer are arranged on the side wall of the drilling bit; the singlechip microcomputer is connected with the first pressure sensor, the second pressure sensor and the collimator. The drilling corrector and the method have the beneficial effects that the drilling corrector is simple in structure and is low in cost; the drilling bit can automatically regulate the descending speed according to the hardness of different rock strata and effectively corrects the drilling, thereby reducing taking times of the drilling bit, gua