This study assesses citizens' perceptions of the effect of drug enforcement on law and order. Telephone survey of a random sample of 450 residents lived in Banqiao, Sanxia, and Danshui districts of the New Taipei City was conducted by the data mining center of National Chengchi University. Major findings of the research include: (1) Citizens held more positive attitudes toward spot/roadside checks, strengthening arrests, urinary tests and house visits strategies. (2) Citizens' perceptions of the effect of drug enforcement on law and order were influenced by income and locality.