In order to solve large-scale job-shop scheduling problems,a hierarchical job-shop scheduling model is established based on the analytical target cascading for hierarchical optimization.Then,by taking two part-manufacturing cells as examples,the effectiveness of the model is verified.Experimental results indicate that the established model can not only solve large-scale job-shop scheduling problem but also dynamically and rationally arrange machines and workpiece-processing paths for each manufacturing cell according to the machining time and the workpiece number.