The research into the areal-types of genera of Chinese seed plants started since 1952.At that time,the joint efforts of Chinese botanists succeeded in preparing the key to genera of seed plants from China.Although this key was very preliminary,it became the very basic yet clear outline of this research about the areal-types of genera of seed plants.Subsequently,a preliminary analysis was made based on all connection with the consideration on the problems about regionalization of Chinese flora during a visit of a Chinese scientific delegation to Soviet Russia.