Automatic fiber placement (AFP) technology could manufacture large composite components effectively,but there are different angle embedded defects due to the same cross-section at the end of the tow in the process of placement.In order to solve the related problems,according to the laying sequence of [(90°/0°)₅/90°] and [(0°/90°)₅/0°],the gap defects or overlapping defects with different end angles of the tow were set in the 0° and 90° laying sequence respectively.The experimental results show that the difference of the composite components is obvious when the defects are embedded in different angles.In the direction of 90° fiber layer,when 90° void defect and 90° overlapping defect are embedded, the tensile strength of the specimen is the highest,and the tensile strength ratio is 90.89% and 90.11%,respectively.In the direction of 0° fiber layer,the tensile strength of the specimen is the highest when embedded with ± 30° gap defect and 30° overlapping defect,and the tensile strength ratio is 28.48% and 50.71% respectively.