Today the domestic civil engineering structure for the reinforcement has been included as one of the important issues. The placement of carbon fiber materials has been widely used in structure reinforcement in recent years Mainly carbon fiber placement with high strength、corrosion resistance、light weight、easy to cut、construction easy to make such carbon fiber patches are widely used in reinforced structures. The paper will shrink size T-shape beams coated with carbon fiber patch And add carbon fiber layering of T-shape beam intensity of the impact. Test method using four-point load pressure on the T-shape beam. The test specimens are designed to shear damage And produced ten different of T-shape beam specimens Carbon fiber layering observed for T-beam coating effects.