Abstract: This article uses the procurement workload of 100 tobacco leaves and 5 tobacco leaf purchase sites in the selected experimental fields in Yunnan Province in 2019 for different dense planting of tobacco leaves. The selected 100 tobacco leaves are selected after the completion of the harvesting and curing. Weight and count the number of pieces. After tracking and observing the workload of five tobacco leaf purchase sites that purchase 5×105 kg of tobacco leaves, the workload calculation of the intelligent tobacco grading equipment in the case of tobacco leaf grading was carried out. The results showed that:（1） The average leaf weight of flue-cured tobacco leaf of Yunyan 87 in the experimental plot of Yunnan mid-levels was 10.24 g;（2） The working day of flue-cured tobacco purchase at the tobacco leaf purchase station in Yunnan Province was between 40～60 d;（3）The efficiency of intelligent tobacco grading equipment should meet at least 30 slices/s or more, so that it is feasible to replace manual grading work within the same working time.