By systematic analysis on some key elements and factors in department economic growth, this paper put forward a feasible economic control model and get the optimal accumulation rate of department economic growth by the optimum principle.

• 本文在系统分析部门经济发展的各要素及因素后，建立了可行的经济控制模型；并利用最优性原理得到了部门经济发展最优积累率。