Abstract: In order to determine the ash content in cigarette paper rapidly,the accuracy and precision of end point in titration determined with two-point method were studied.The ash contents in seven cigarette paper samples were determined by two-point,graphic,indicator,and high temperature methods,respectively.The data obtained were compared by F test and t test.The results showed that:1) the recoveries,the readings of the points before and after equilibrium point,of the two-point method ranged from 100.5% to 100.8% and from 100.0% to 100.7% with the RSDs of 0.38% to 0.80% and 0.61% to 0.82%,respectively;2) at the confidence level of 95%,there was no significant difference between the precision values of the said methods and no significant differences between the average values of two-point method and graphic method,while there was significant difference between the average values of two-point method and indicator or high temperature methods.In potentiometric titration,determining end point by two-point method is fit for the rapid analysis of ash content in batches of cigarette paper samples.