Comparative study on the reprints of fifteen. different versions of The Red Chamber Dream was carried out to elucidate the relation between one another. Preliminary results indicated that there was no definite relationship between ten existed handcopied versions. All of them were "mixtures" derived from different versions and had been re-copied for more than once. The "Geng-Chern" version (庚辰本) has many mistakes. The "Jiaa-Chern" version (甲辰本) has several abridgements-o Some of the unique sentences in the "Dung-Guan-Ger" version (東觀閣本) were originated from a version not available today. The "Yoou-Jehng" version (蒙府本) and the "Merng-Fuu" version(有正本)might not be from the same original as usually' considered.