Abstract: In this paper the layout design method of the hatchback interior space is introduced based on automotive ergonomic principle, including pedal layout, dashboard layout, the operating space of the cab layout, the layout of the front and rear seat and so on. Interior space dimensions and main technical parameters are determined. The relationship among the man-machine size, comfort and vision is discussed. Finally, in order to show the rationality of the design, H-point human model is imported into CATIA. The result verified the reasonableness of the arrangement.