Abstract: Grooves in the ruddy part and the zone of transition of the human lips were called “figura linearum labriorum rubrorum” or commonly “lip print”. It would be useful for criminal search and personal identification and genetic studies.
1403 Chinese (712 males and 691 females) were investigated. The ages of the subjects ranged from 7 to 20. The lip prints were classified using Tsuchihashi's classification of the lip print.
The lip prints of the same individual were investigated every month for one year, No changes were found.
Data were compared with Japanese subjects and discussed.

Key words: Lip print; Personal identification