To provide a method and device for safety control for preventing the rise of solvent concentration to a dangerous value in a dry cleaning device using hydrocarbon solvent, hastening the drying cycle and enhancing the reliability.

This method for safety control of drying cycle in the dry cleaning device using hydrocarbon solvent comprises a process for passing drying air to an additional separator and heat exchanger 11 having a large heat capacity prior to the circulation to the drum 2 in the starting period of the drying cycle where the temperature of a heating air-solvent mixture in the discharge port of a purification drum 2 reaches a value higher than a prescribed safe value. The device for executing this method comprises the additional separator and heat exchanger 11 connected to the drying air passage of the dry cleaning device 1 through at least one valve 14, 15, and 16 responding to a temperature detector 17.