The utility model relates to a subway tunnel top leaky cable installation transversal calibration formula drilling equipment, by the travelling car, display screen's meter rice wheel, electric hammer advancing mechanism, the electric hammer support, the electric hammer, an installation rack and a fixed rack, the infrared ray corrector, light screen and brake mechanism constitute, the infrared ray corrector and the light screen of vertical setting are installed side by side to horizontal mounting plate middle part at the travelling car, install the electric hammer of setting on the electric hammer support at lateral sliding between infrared ray corrector and the light screen, the electric hammer advancing mechanism that this electric hammer set up by sliding on the travelling car realizes reciprocating, lateral sliding installs meter rice wheel on the installation roof beam of horizontal mounting plate's rear portion travelling car, this meter rice wheel exposes in the opening between horizontal mounting plate and the installation roof beam, the travelling car passes through the brake mechanism braking. The utility model discloses structural design scientific and reasonable has work efficiency height, with low costs, the advantage that reduces intensity of labour, safe and reliable.