The invention relates to a heating cigarette using a Venturi type hollow filter stick. The heating cigarette is composed of a
tobacco substance and a hollow filter stick with a Venturi structure, thestructure of a hollow cavity is characterized in that the
diameter of the cavity periodically and continuously changes along the axial direction of the hollow filter stick, and a series combination ofa group of thick cavities and a group of thin cavities which are connected in series is formed. When
smoke generated by
tobacco substance by high-temperature heating passes through the cavity, the flow speed of
smoke fluid is changed due to the change of the cavity structure, the fluid state is forced to be changed into a turbulent flow from a laminar flow, so that the heat conduction efficiencyis improved, and thus the good
heat transfer and
cooling effect is achieved. Meanwhile, when
smoke aerosol passes through the venturi type hollow filter stick, the
aerosol collides, condenses and releases heat because the
diameter of the inner cavity part is continuously and alternately changed, so that the
cooling effect is further enhanced. The heating cigarette using the Venturi type hollow filter stick is sufficient in smoke amount, moderate in
inlet temperature and good in smoking experience; and in terms of actual production, the
processing technology is simple, and the
quality control difficulty is small.