Patent ID: 7094522

Claim:
A substrate treating method for discharging a first solution continuously to a substrate from a solution discharge port of solution discharge/suction unit, sucking the solution on the surface to be treated continuously from solution suction ports disposed in the solution discharge/suction unit so as to enclose the solution discharge port continuously, moving the solution discharge/suction unit and the substrate relatively, and treating with the solution by adjusting the suction pressure such that the solution does not flow out to the outside of the solution suction port, the method comprising: acquiring in advance the relation between the covering rate of a pattern which is not removed by the first solution in the treating region where the first solution flow exists on the substrate, the relative speed of the solution discharge/suction unit and the substrate, and the finishing dimension of the pattern after the solution treatment; determining the relative speed of the solution discharge/suction unit and the substrate depending on the pattern covering rate on the basis of the relation; and treating with the solution while relatively moving the solution discharge/suction unit and the substrate depending on the determined relative speed and the pattern covering rate in the treating region.