Aiming at the defects such as burr and tear on the surface of aviation T800 composite with fabric layer, the milling tests of different structural tools were carried out. The effects of fiber cutting angle, tool structure, milling parameters and tool wear on the milling surface quality of T800 composites were studied. The results show that burrs occur more easily in the range of fiber cutting angle of 90° – 180°, but there are few burrs in the acute angle area; Based on the principle of multi-edge micro element milling, using corn milling cutter and diamond coated milling cutter with micro edges can effectively inhibit the generation of burrs in milling of T800 composites with fabric layer; Under the conditions of 8000– 10000 r/min spindle speed and 200 – 300 mm/min feed speed, when the axial depth of cut reaches 2.0 – 2.5 mm, excellent machining quality can still be obtained; Diamond coated milling cutter with micro-edges has longer life and lesser surface burr defects.