In this paper the author analyzes the social and cultural value of the references of family trees.

The important value of data from pedigree of a clan in South Fujian can be concluded as follows:a) to make up the deficiency in the history books wirtten in biographical style and the local chronicles ;b) to collate the errors in historical records;and c) to settle the unsettled questions in history.

The article expounds the building s backdrop of hakka digest database,confirms the thinking of data standard,introduces the functions of database doftware, the mathod of data quality control,the query system of database and the service characteristic of database.

This paper expounds the situation of pedigree digitalization construction in Wenling Library,introduces the workflow of constructing pedigree repository by using DESI system,and in the light of the deficiencies existing in Founder DESI system software,puts forward some suggestions on the construction of pedigree repository.