The name of 3d clothing collocation project is 3d clothing design and application. Three-dimensional fashion design is the core professional course of fashion specialty. This book is written on the basis of CLO system. CLO system products are at the leading level in the garment 3D industry, with powerful and complete functions, convenient use, high accuracy and certain popularity, which is in line with the development of modern garment industry. This book shows the design, structure, color and fabric of clothing through 3D clothing design software and digital virtual sewing. The book is divided into five chapters, which are 3D clothing design software interface and basic functions, 3D clothing fitting comprehensive application, 3D clothing design comprehensive application, 3D clothing development comprehensive application and 3D clothing display application. The purpose is to enable students to independently master the basic theories and skills of 3D clothing design and design through the teaching and learning of basic knowledge such as 2D pattern editing and sewing, 3D clothing dress and simulation, noodle accessories editing and parameter setting, and stage catwalk simulation.