There are many traditional groups--for example the organization of "han", "kumi", the blood relations, the group of "uziko", "danto" and religious associations--in a rural community. The purpose of this research is to examine the systems of the organization of groups. The main results are as follows : The "han" is a fundamental orgnization in rural communities. Many groups which have a different function stratify. A home has channels of communication. A relation of people is complex. Groups have each spacial position.