Abstract: This paper conducts researches on the Integrated Design with streamline analysis of pedestrian flow and facility layout inside passenger terminal.Streamline Analysis(SA) and System Layout Planning(SLP) are combined with system simulation under precondition that satisfies the smooth streamline of pedestrian flow in passenger terminals.Safety utility,structure utility and function utility are considered in a whole to establish Facility Layout Optimal Model for passenger terminals.Then optimal strategy and its optimized solutions are proposed so that maximum of utility can obtained from the inner facility layout solution and its relative streamline organization solution could be gotten maximum utility.Hereby,the Improved Facility Layout Planning Method based on Streamline Analysis(short in SLP improved) is offered.Simulation experiments show that this method can decrease calculating difficulty and enable dynamic parameter selection and simulation optimization to be carried out.And it partly solves the problem of lacking system analysis method and simulation experiment technology are partly resolved in the field of inner facility layout and optimization of passenger terminals.