Narcotic drugs, particularly heroin, are prevalent in Mae Sa Mai Village 6, Tambon Pong Yaeng, Mae Rim District, Chiang Mai, which is an ethnic Hmong village. From investigating the teaching culture from parents to children concerning drugs, it is found that the culture is carried out. Regarding the relationship between cultural changes and drug prevalence in the society, most villagers perceived that there was not much of a relationship between drug use and cultural decadence. They predicted that drug prevalence would be serious in the future. To solve drug problems, they suggested that the state should to an extent empower the community and provide support as requested. Furthermore, the state should launch public relations campaigns to provide knowledge about drugs to the public. Additionally, drug issues should be incorporated into school curricula in areas where narcotic drugs are prevalent.