The invention discloses an adjusting and fixing device for a coal mine underground laser pointing instrument. The device comprises a supporting plate, a mounting plate and a sleeve rod, wherein groundgrabbing nails are arranged below the supporting plate; an adjusting button is arranged on the outer side of the supporting rod; a sleeve ring is arranged on a vertical rod; the mounting plate is located above the vertical rod; and a liquid level gauge is arranged on the outer side of the mounting plate; the sleeve rod is located above the mounting plate, and the sleeve rod is connected with themounting plate through a connecting rod, and a second pointer is arranged on the outer side of the sleeve rod; a mounting hole is reserved in the sleeve rod, and marbles are arranged on the inner sideof the sleeve rod, and the marbles are connected with the sleeve rod through springs. According to the adjusting and fixing device for the coal mine underground laser pointing instrument, a irradiation angle of the laser can be adjusted conveniently, and meanwhile, the specific inclination angle can be observed, so that a worker can conveniently adjust a pointing angle of the laser according to aactual trend of the coal mine, then the phenomenon of deviation of a coal mine tunneling is avoided, and a tunneling efficiency is improved.