There are provided a liquid processing method and a liquid processing apparatus capable of removing a resist film without removing an underlying film when removing the resist film from a substrate on which the underlying film and the resist film are formed in sequence from the bottom and into which ions have been previously implanted. In the liquid processing method capable of processing a substrate by a processing solution, the method includes removing the resist film from the substrate by supplying the processing solution at a temperature of about 120° C. or higher to the substrate. The processing solution includes a sulfuric acid and a nitric acid at a preset ratio, and the substrate has thereon the underlying film and the resist film formed on the underlying film, and ions have been previously implanted into the substrate.