The “Wen Chu” Fan of the Ming Dynasty and the “Yong Rong” Fan of the Qing Dynasty were suffering from diseases such as insect damage, losing parts, discoloration, powder loss, fan bone damage and breakage. Scanning electron microscopy-energy dispersive X-ray spectrometry (SEM-EDX) and other scientific measures were used to conduct a comprehensive analysis and to help to solve some issues including the selection of supplementary papers, fixation of gold paper and filling of worm holes in the original folds of the fan surface. etc. Methods for fan surface cleaning, peeling, filling, color restoration and stroke connecting were also designed. During the fan bone restoration, ancient measures such as sticking, bonding and tenon joints were explored and then applied in order to recover the original appearance of the fans and to retain, as closely as possible, the aesthetics and practical values that ancient people had for folding fans. This is a new idea which combines traditional craftsmanship and modern technologies.