Structure of 3D angle-interlock fabric was studied,structural features of different angle-interlock fabrics were got and structure of different angle-interlock fabrics could be designed based on warp and weft interwoven rule. Compared with 3D flat angle-interlock fabric,four classifications were got such as interwoven and interrelated groups,a tissue structure of angle-interlock fabric with spurting outlet was developed,features of different 3D flat angle-interlock fabric tissues were briefly pointed out,the interrelationships among classifications under different grouping standards were elaborated,which provided reference for the design of angle-interlock fabric tissue in the future.