A series of laboratory and field experiments were conducted to study the effects of lime dosage on dynamic response of pH value，agronomic traits and economic traits of fluecured tobacco in acidified yellow soil in renovated fluecured tobacco field.The results showed that：the pH changes of acidified yellow soil were roughly divided into three phases according to the response characteristics of soil pH value to lime dosage in different periods during incubation course.The first phase was a rapid changing stage，showing a sharp increase in soil pH value with relatively short duration.The second phase was a slowly changing stage which the direction of change，rate of change in soil pH value and duration period were affected by lime dosage.When the lime dosage was less than 3.00 t/hm2，the duration was about 60 days.When the lime dosage was more than 4.50 t/hm2，rate of pH change increased with increasing liming dosage and the duration was risen from 15 days to 30 days.The last phase was a stable stage presenting stable pH value，in which lime dosage and soil pH was significantly positively correlated and fitted to nonlinear relationship.The field experiment showed that the trend of pH value varied with the amount of liming,which was basically consistent with results of incubation experiment.Combined with effects of soil pH value and fluecured tobacco，applying 1.50 t/hm2 lime into ridges before transplanting period about 60 days was suitable for correcting acidity of yellow soil at the condition of pH value was about 5.0.