In order to study the flexible structure of 3D printed fabrics and. promote the development of 3D printed clothing, the appearance of biological forms in nature was extracted summarized and screened into three categories : wave folds y mesh holes and parallel ridges by means of morphological bionic design. Shapr 3D modeling software was used, to build morphological bionic fabric 3D models, and three-dimensional fabric entities were printed by FDM technology. Four pieces of wave-fold, biomimetic fabric, eight pieces of mesh-hole biomimetic fabric and four pieces of parallel ridge biomimetic fabric were obtained. The results show that the overall precision of the biomimetic 3D printing fabric is high, smooth and flat* The flexibility of 3D printed fabrics with different structures of the same material has certain differences* The flexibility of the fabric is also different according to the unit structure. The 3D printed fabric structure produced by morphological bionic design method, has certain flexible properties, which provides diversified, solutions for the flexible development of 3D printed fabrics.