CAD/CAM/CAE (3C) was effectively applied to twin-spirals scroll compressor (TSSC) from conceptual design to finished products in this paper. A virtual model and mathematical model of TSSC was developed. The swarm intelligence algorithm was used for TSSC optimization and the final optimization design variables were gotten. CAE was used to study the two key components of TSSC-orbiting and fixed scroll, which is useful for improving the quality and reliability of manufacturing and assembly accuracy at the later stages. CAD, CAPP, CAM, CAE and NC tool path code generation are included in 3C. The prototype of TSSC was manufactured based on 3C. The used results indicate that 3C method can well overcome the blindness and limitation of the traditional design. It offers the new method and idea for wide application of the scroll compressor.