Abstract: In order to accurately evaluate the property of ash integration of burning cigarette,a 20-channel linear smoking machine was designed and the images of ash left on burning cigarettes were taken by a digital camera.The results showed that:1) when cigarette paper's air permeability,grammage and the content of ash aggregation reagent increased from 40CU to 70CU,28 to 34 g/m²,and 0 to 0.3%,respectively,the content of citrate combustion improver decreased from 1.7% to 1.0%,the ash aggregated more tightly;2) to improve the integration of ash,it was applicable to include more reconstituted tobacco in cigarette,if cigarette quality was not obviously affected;3) when the individual weight of cigarette with a cellulose acetate filter 25mm in length was in the range of 0.89-0.93g/cig,the ash was better aggregated.