The invention discloses a comprehensive arrangement method of an underground roadway and an underground garage, and belongs to the technical field of underground space comprehensive utilization. According to the comprehensive arrangement method, the underground roadway is arranged by using the shallow underground space under a surface road, and the underground garage is arranged by using land masses. The comprehensive arrangement method has the beneficial effects that (1) the surface road underground space is fully utilized, and urban road resources are expanded; (2) the underground traffic space is increased, and ground traffic pressure is relieved; (3) the effect of a car dealer connection special lane of the underground garage is realized; (4) the underground roadway and the undergroundgarage are effectively connected; (5) natural lighting and ventilation are increased, and the quality of the underground space is improved; and (6) the fire fighting segregation requirements are met.The comprehensive arrangement method is suitable for simultaneous development of the underground roadway and the underground garage in a city, and is used as to improve the underground space, the underground roadway and the underground garage are effectively connected, natural lighting and ventilation are increased, and at the same time the problems of fire fighting separation and the like are solved.