Abstract: An experimental study of the rheology behavior of BS3-94-10 type epoxy resin film,the compactibility of the pre-fabricated laminate and the interlaminate shearing and bending properties of the coupon of RFI stitched composite were carried out,and the optimal technical parameters of resin film infusion and stitching process were designed.On this basis,high performance T-shape composites panels were fabricated.The buckling performance of the T-shape composites panels before and after stitching was tested.The results show that stitching can significantly improve their buckling performances.