Only 10% from Yuxi City and 11.7% from Gejiu City heard of MMT.There was no notable difference between the two cities (P>0.05).

• 分别仅有10%25（玉溪市）和11.；7%25（个旧市）的家属听说过美沙酮维持治疗项目，两城市比较差异无显著性(P>0