Machining surface roughening milling cutter and machining surface machining method thereof

The invention discloses a machining surface roughening milling cutter and a machining surface machining method thereof. The machining surface roughening milling cutter comprises a cutter body and at least two cutter teeth, wherein the cutter teeth are formed at the end of the cutter body, receding grooves are formed between the cutter teeth and the end face of the cutter body, and chip grooves communicating with the receding grooves are formed in the periphery of the cutter body; the width of the end face of each cutter tooth ranges from 0.3 mm to 1.1 mm; the height of the cutter teeth ranges from 1.5 mm to 3.8 mm; and the receding grooves are opened towards one sides of the end faces of the cutter teeth, the ratio of the width of the groove bottoms of the receding grooves to the diameter of the cutter body is 0.7-1.2: 2, and an included angle between the groove walls of the receding grooves and the axis of the cutter body is 10 degrees-18 degrees. The machining surface roughening milling cutter is high in ro