Abstract: The production system of animal husbandry is a complicated system which contains live-stock and animal ecology, economy, management, resource and other factors. In the wake of the introduction of computer technolongy, various optimal models have been established in order to set the benign ecological system of animal husbandry. Obvious economic benefit has been achieved in the practical production, which shows its mighty future of application .The system method used in production of animal husbandry will open up a new way for settling all sorts of problems as the low energy turnover, low benefit in our country’s animal hushandry, it also will promote the development of the live-stock and animal harmoniously and steadily. Methods for establishing models and its application in animal husbandry have been reviewed.