The invention provides an air-cooling source simulation device mated with a ventilation suit. The air-cooling source simulation device is used in cooperation with the ventilation suit. The air-coolingsource simulation device includes an air conveying machine in communication with the ventilation suit, a flow control component connected to the air conveying machine to control the air flow rate, atemperature control component connected to the air conveying machine to control the air temperature; and the flow control component includes a flow regulating valve and a throttle component which areconnected in series, and the throttling component includes at least two throttling structures connected in parallel. By means of the technical scheme, the problem that it is difficult to lead in air with different wind temperature and flow combinations in the development process of the ventilation suit in the propr art is effectively solved.