There were numerous textile mechanical inventions in ancient China. Some of them have complex structures, such as the foot-operated silk-reeling mechanism, foot-operated spinning device, belt drive spinning device, foot-operated slanting loom, and drawloom for pattern-weaving. Since these complex textile devices consist of several mechanisms, it is difficult to classify them based on the types of mechanical members. This chapter systematically reconstructs all feasible designs of the complex textile devices that meet the ancient technological standards. The functions and components of the textile devices are explained. The mechanism structures of the textile devices are analyzed. The design constraints for the reconstruction designs are concluded and examples are provided for explaining.