The present invention relates to a method for drying endoscope channels, including the following steps: a) connecting the endoscope, particularly via a specific connection, to a plasma drying unit b) injecting a neutral gas into the endoscope channels for a duration of 10 to 60 seconds, the flow rate of the gas being low, the gas being injected at a temperature of 10°C to 30°C such as to eliminate residual water then c) drying the endoscope channels, for a duration of 30 to 150 seconds, by injecting a gas at a high flow rate, the gas being injected at a temperature of 30°C to 60°C.