This book is written by the author on the basis of years of computer drawing and teaching practice. The book mainly introduces the use of CAXA entity design software and basic knowledge and skills. Chapter * * * 15 of the book, and chapter 1 is an overview of CAXA three-dimensional entity design; Chapter 2 is standard intelligent pixel; The third chapter is the generation of custom intelligent pixels; The fourth chapter is the application of three-dimensional ball; The fifth chapter is the basis of part design; Chapter 6 is the application of standard parts and advanced pixels; The seventh chapter is the design of curved parts.