A beveling machine of the present invention comprises a beveling machine body (100); a head part (110) having a cutter (130) which is inserted to a rotating shaft (120); a main block (200) having a pair of fixing rollers (210) and a guide roller (220); a first adjusting member (300) moving the beveling machine body (100) horizontally; and a second adjusting member (400) moving the fixing rollers (210) horizontally. The beveling machine comprising the above components can be installed on a pipe or a flat surface to carry out beveling work smoothly for any thickness or outer diameter of a pipe or a flat surface.
