This study aims to determine the community's knowledge, attitudes, and behavior in implementing the COVID-19 prevention health protocol in Banda Aceh City. The type of research used is descriptive with a cross-sectional study design. The study results showed that public knowledge was excellent, as many as 237 (56.4%) people. As many as 322 (76.7%) people, Attitudes are included in the superb category. The community's behavior is as excellent as many as 299 (71.2%) people. Conclusions, knowledge, attitudes, and behavior in implementing the COVID-19 prevention health protocol in Banda Aceh City are in the excellent category.   Keywords: COVID-19 Prevention, Knowledge, Behavior, Attitude

(² = 125.55, p < .001), current educational year (² = 29.75, p < .001), living arrangement (² = 11.47, p < .01), Sensation seeking (² = 40.81, p < .001), depression (² = 50.81, p < .001), p < .01), family history of drug use (² = 196.58, p < .001), and peer drug use (² = 85.63, p < .001) IntroductionUnited Nation Office on Drug and Crime (UNODC) has estimated that in 2010 between 153 million and 300 million people aged 15-64 (3.4-6.6 % of the world's population in that age group) had used an illicit substance (harmful or hazardous use of psychoactive drugs) at least once in the previous year [22]. In Indonesia, the prevalence of drug use were increased about 0.21% from 1.99 % or about 3.3 million people in 2008 to 2.2 % or about 3.8 million people in 2011 of the total population (aged 10-60 year old) [14]. Aceh is one of Indonesia province with the higher risk of substance behavior. Aceh was the first rank of marijuana land evidence in Indonesia. The survey of 10 universities in Aceh revealed that the students in eight of ten universities were positively engage in drug user [12]. Despite, government and BNN of Aceh had sought strategies against drugs use in Aceh; these cases have increased in three years . There has been a significant increasing in specific drug use involving, in particular tobacco products, methamphetamine, and marijuana [11]. Consequently, there were health's effects of the increasing drug use prevalence.From the perspective of adverse effects, drug use was ranked at 20 th world as the cause of mortality and it was ranked at the 10 th in the developing countries, including Indonesia. UNODC (2012) stated that there were between 99,000 and 253,000 deaths of drug user globally in 2010, with drug-related deaths accounting for between 0.5 and 1.3 % of all-cause mortality among aged 15-64 [21]. Not only adults were attacked by these health consequences of drug use, but currently adolescents are at high risk of these issues.One of factors that can influence drug use behavior is intrapersonal factors. Previous studies identified that intrapersonal factors (sensation seeking, depression, and self-esteem) were affected drug use behavior. These factors found were associated with drug use [15], [8]. In another hand a study showed these factors were not significantly associated with drug use [20]. Another, factor that can influence drug use behavior was interpersonal/ social factors, including family history of drug use and peer drug use. These factors influence an important role in shaping of drug use attitudes and behaviors among adolescents. According to literature review, those factors affecting drug use behavior in adolescent [4], [15], [8].The theory of triadic influence (TTI) [16] is used as a guiding theoretical framework for this study. Briefly, the TTI is a metatheory that integrates several theories of health related behavior. It was initially developed to explain adolescent substance-use behaviors. The theory provides for a comprehensive, integrative analysis of social situation, cu...