The invention discloses a self-adaptive calculation method for a full-speed closely-attaching running control curve of a rail transit train. The method includes the following steps that a train running path and a train full-speed running reference curve are determined; a train traction running curve is calculated; the intersection sections of the train traction running curve and other reference curves are calculated; a train cruising running curve is calculated; the intersection sections of the train cruising running curve and other reference curves are calculated; a train braking running curve is calculated; the intersection sections of the train braking running curve and other reference curves are calculated; and in the train running direction, the train full-speed closely-attaching running control curve is generated. By the adoption of the method, a project task period can be greatly shortened, the project construction schedule is accelerated, and a large amount of expenditure is saved; and the use period of train-mounted system equipment is prolonged, the repair and maintenance workloads are reduced, the comprehensive design quality and level of a rail transit project are improved, and effective realization of the line transportation capacity is guaranteed.