For earth-friendly tobacco leaf production practices, field trials on the effects of rapeseed oil for sucker control, which using a treatment of toping without sucker removing as negative control, a treatment of suckercide (Chuyatong) as positive control, was conducted. Compared to negative and positive controls, the first leaf area on the top was increased from 190.31 cm2 to 563.41cm2 treated by different rapeseed oil concentration, and the second one was increased from 110.01cm2 to 297.75 cm2 different concentration of rapeseed oil, the other concentration rapeseed oil Suckercides processing. Despite of 6.7% rapeseed oil, no significant difference in increasing leaf area was observed for the multiple concentration rapeseed oil treatment compared to positive control. While there observed a significant difference in increasing top leaves area compared to negative control. Compared to positive control, no significant difference in fresh weight of axillary bud, sucker control rate, the sprout inhibition effect were observed, however, there observed significant differences in fresh weight of axillary bud, sucker control rate, the sprout inhibition effect when compared to negative control. For cost saving, 10% rapeseed oil treatment had a similar effect of sucker control with Chuyatong, it pitchfork fresh weight was 523.2g, the sprout inhibition effect was 86.8% and the suckercides rate was 75.8%, there were significant higher than the negative control, it could be recommended for use in the leaf production.