This research investigated type and mean of bird''s previous lives in Japan. bird''s previous lives(Kotorizensyoutan) is a class of animals Iranian folktales. Including the story of the little bird past life is folklore that before it comes to the origin of such a bird''s cry, shape and behavior. Kotorizensyoutan contained in the main folklore kits in Japan can understand the classification of several prominent type. This paper analyzed the social and cultural implications of the Kotorizensyoutan in terms of the breakdown of family relationships. Many molded Kotorizensyoutan definitive cause the man to transform a small new is none other than the breakdown of family relationships. Therefore, it is necessary to pay attention to the molded Kotorizensyoutan in terms of the breakdown of family relationships. Kotorizensyoutan is paradoxically makes the audience aware of the cause by showing the disastrous consequences of the breakdown of family relationships or let the readers how precious in the tradition of the family group to process.