本文报道了应用甘薯茎尖分生组织培养技术获得脱毒苗的研究结果。试验表明切取的茎尖大小与脱毒效果呈显著的负相关（ｒ＝－０．９８７５），表明病毒距茎尖呈递减分布，越接近茎尖顶端带病毒越少或不带病毒。分生组织带１～２个叶原基脱毒效果较好，添加适量的病毒钝化剂可提高脱毒率，但抑制茎尖生长，成苗率有所降低。选用无症状、生长健壮的薯苗作脱毒材料，可以得到较高脱毒率的组培苗。 This paper reports the results of the study on the application of sweet potato shoot tip meristem culture to obtain virus-free seedlings. The results showed that there was a significant negative correlation (r = -0.9875) between the size of stem tips and the detoxification effect, indicating a decreasing distribution of the virus from the shoot tips. Merbot with 1 or 2 leaf primordium detoxification effect is better, add the appropriate amount of virus deactivator can increase the detoxification rate, but inhibition of shoot tip growth, seedling rate decreased. Selection of asymptomatic, robust potato seedlings for detoxification materials, you can get a higher virus-free tissue culture seedlings.