Abstract: In this paper, the optimal industrial structure on household farm has been made by using the method of segmented linear programming with computer. Based on soil and climate condition of SAN-JIANG Plain-Area in HEI LONG JIANG Province, six types of optimal designs of agriculture, forestry and animal husbandry structure on household farm are given. On the other hand, the paper puts forward some concrete suggestions for promotng the production and raising the economic benefits.