To provide a gene information recording method accumulating gene information efficiently to access the whole of the accumulated gene information on an individual.

A gene information recording file consists of a gene index file 1, a key work index file 2 and a gene information file 3. GENE ID and a recording address of gene information are recorded on the gene index file 1. When gene types are designated by a group, TYPE ID of a gene group is recorded. The key word of a gene is stored in the key word index file 2 and gene sequence information and information on the type of a polymorphic gene group are recorded on the gene information file 3.