Tunnel drilling machine

The utility model provides a tunnel drilling machine which comprises a walking system, a rotating seat, a rotating base, a rocker arm and a drilling assembly, the rotating seat rotates in the circumferential direction and is fixedly arranged on the walking system in the axial direction, the rotating base is arranged at the front end of the rotating seat, one end of the rocker arm is arranged on the rotating base in a hinged mode, and the drilling assembly is arranged on the rocker arm. A driving building, a power system and a heat dissipation system are further arranged above the rotating seat, the drilling assembly is arranged on the front side of a cab, supporting legs are arranged below the rotating seat, the supporting legs are liftable supporting legs, the number of the supporting legs is at least four, and the four supporting legs are arranged at the four corners of the rotating seat. By arranging the rotating base, the whole drilling assembly can rotate by 360 degrees, and the purpose of drilling circu