The utility model belongs to pre-buried sleeve pipe mouth of pipe plane degree processing equipment field, concretely relates to to pre-buried sleeve pipe mouth of pipe plane degree processing cutter, its cutter fixed axle, dish-type milling cutter and sleeve pipe location axle that includes coaxial fixed connection, dish-type milling cutter includes the milling cutter knife rest of a dish-type and fixes alloy blade on the milling cutter knife rest. The utility model discloses simple structure, can be fast the accurate pre-buried sleeve pipe of processing orificial plane degree and orificial deckle edge, improve production efficiency fast safely, stablize product quality, can guarantee that pre-buried sheathed tube axis and pre-buried sleeve pipe orificial plane are perpendicular, be favorable to that the orificial plane of the pre-buried sleeve pipe of assurance should flush in sleeper support rail face in the use, satisfy the relevant requirement of work and construction.