The utility model discloses a broken bundle instrument of oil pipe belongs to the oil and natural gas field. Broken bundle instrument of oil pipe includes: connector (1), with the lower end connection's of the left end portion (101) of connector tool bit (2), and the upper end of tool bit (2) sets up cutting edge (201), with the last end connection's of the left end portion (101) of connector limiting plate (3), with the lower terminal surface of limiting plate (3) is connected sets upright or straight board (4), the thickness of rightting board (4) is greater than the thickness of limiting plate (3), just the lower surface of rightting board (4) with the upper surface of cutting edge (201) has gap (401), the width of gap (401) slightly is greater than the thickness of strap, with handle (5) of right -hand member portion (102) the connection of connector. The utility model provides a broken bundle instrument of oil pipe can cut the oil pipe strap quick, laborsavingly.