Firstly, this paper expounds the design methods of traditional arts and crafts, including the traditional design methods of sculpture crafts, glass crafts and ceramic crafts. Then it analyzes the advantages of computer technology in the design of arts and crafts, including improving the product performance of arts and crafts, improving the design interest of arts and crafts designers and improving the modern flavor of arts and crafts; then it expounds the application of computer technology in different stages of arts and crafts design in detail, including the early preparation, concrete implementation, design scheme optimization and in-depth design stage; Finally, it analyzes the specific application of computer technology in arts and crafts design, including the application of computer technology in sculpture crafts design, glass crafts design and ceramic tea set modeling design.