The partial template method using the concept of an immune system was developed for finger vein pattern identification. The partial templates, that is, anti-bodies were made by cutting out standard images. The template antibodies were selected based on the rules similar to the clonal selection. Two procedures for the identification were proposed and their performances were evaluated using the samples of transilluminated finger vein image. With a preliminary test system, we could distinguish the self out of several tens of nonself images. It was verified that the artificial immune system based on the partial template method is effective for the personal identification with finger vein patterns.