Abstract: In order to study the factors influencing the shape of cigarette combustion cone, the surface area, length, half-peak width and two-side deviation angles, 113 different cigarette samples with varying design parameters were smoked under ISO regime and these parameters were determined by machine vision technology. The relationships between cut tobacco parameters, cigarette paper parameters, combustion parameters and combustion cone shape were analyzed. The results showed that: 1)Machine vision technology could quickly characterize the shape of the combustion cone, and the method had high repeatability and good stability. 2)Among the combustion parameters, the burning temperature significantly affected the deviation angle No.2(right inclination angle of the combustion cone). The length, surface area and half-peak width of the combustion cone increased with the increase of cut tobacco combustion rate and oxygen consumption. The smoking and combustion rates of the test cigarettes significantly positively correlated with the length, surface area and half-peak width of the combustion cone, and negatively correlated with the deviation angle No.2. 3) The size of the combustion cone increased with increasing reconstituted tobacco content, cigarette paper grammage and calcium carbonate content, and first increased and then decreased with increasing cut tobacco width, cigarette weight and potassium/sodium ratio. Compared with pneumatic cut tobacco drying, thin plate cut tobacco drying significantly increased the size of the combustion cone.