Abstract: It is a popular phenomena that one family raises several kinds of poultry in the rural area. According to the theory of scale economy, the little scale and vary raise will result lower profit than the special raise. From the viewpoint of risk management, the kind of family-raise is a risk management method of insurance each other. The process that agriculture family uses this kind of risk management is an asset distribution management, so the asset distribution model can display all the process, and farmer's preference of risk can effect his decision. By analysing all the process, it is possible to find some efficient policies that can make family-raise get a good development.