The invention relates to the technical field of treatment of organic compound exhaust gas, in particular to a usage method of a processing device for preparing a volatile organic compound exhaust gas activated adsorbent. The usage method of the processing device for preparing the volatile organic compound exhaust gas activated adsorbent is characterized by comprising usage methods of an activated granulation tower, a support frame, a circulating fluidized bed coal fired boiler flyash spiral feeder, a disulphur dichloride storage tank component, and a sulfur evaporator. A circulating fluidized bed heat recovery boiler discharges exhaust gas which contains extremely low oxygen, has low probability of generation of sulfur explosive under a low-oxygen environment, and is very ideal as a technology cooling medium of a sulfur adhesive, thus giving full play to the functions of the sulfur as an adhesive and an adsorbent; meanwhile, the circulating fluidized bed heat recovery boiler discharged exhaust gas conducts spiral escalation in the activated granulation tower, wraps and activates the circulating fluidized bed coal fired boiler flyash along with the sulfur adhesive and disulphur dichloride atomized liquid drops so that particles can constantly grow large so as to fully conduct mass and heat transferring, therefore the overall technological process of activation and granulation of the adsorbent in the tower can be achieved, and thus industrialization production becomes possible.