A passenger train operation scheme diagram drawing method disclosed by the present invention comprises the steps of constructing a railway road network topological structure diagram, establishing a road network topological structure diagram based on stations; according to the road network topological structure diagram, utilizing a fuzzy set to describe a target function convenient for passengers to travel, and establishing a road network passenger train operation scheme diagram drawing and optimization model by taking the station and path capability as the constraint; utilizing a rough-fuzzy soft set theory to describe the important degrees of the road network stations, and transforming the road network passenger train operation scheme diagram drawing and optimization model into a passenger train operation scheme diagram drawing model which is drawn according to the important degrees of the stations; according to an ant colony algorithm based on the station and path capability cooperation, solving the passenger train operation scheme diagram drawing model which is drawn according to the important degrees of the stations rapidly to obtain a passenger train operation scheme diagram. By the technical scheme of the present invention, the implementation possibility of the passenger train operation scheme diagram is conducive to being improved.