The invention discloses an experimental device for simulating an outer heat source of a heated non-burned cigarette. The experimental device comprises a tubular heating furnace and a heat preservation sample bin which is arranged under the heating furnace and used for storing solid-phase heat media, a vertical heating material tube is installed in a furnace body of the tubular heating furnace in a penetrating mode, and the lower end of the vertical heating material tube stretches out of the heating furnace and then is directly introduced into the heat preservation sample bin; the upper portion of the heating material tube is provided with a feeder, a blocking mechanism is arranged on the lower portion of the heating material tube in the heating furnace, an elastic operating rod of the blocking mechanism is arranged at the upper end of the heating material tube, and a heated non-burned cigarette sample inserting hole is formed in the heat preservation sample bin. According to the experimental device, through a granular solid-phase heat medium heating mode, not only is quick heating on a cigarette sample achieved, but also interference between the outer heat source and a temperature sensor in the cigarette or smoke collecting pipeline arrangement is effectively avoided; in addition, separate simulating for a peripheral constant temperature heating heat source and a constant temperature airflow heating heat source can be achieved very conveniently according to the different cigarette inserting depths.