Objective:Discuss impacts of family environment over Hainan province adolescent drug taking behavior.Methods:Adopt "Investigation Questionnaire of Family Environment of Drug Abuse Adolescent in Hainan Province" that compiled by self and "Family Environment Scale (FES-CV-Ⅲ)" for research tools.To carry out questionnaire investigation to the 352 drug taking adolescents,who come from "The First Reeducation Through Labor Institute in Haman Province","The Second Reeducation Through Labor Institute in Hainan Province" and "The Center of Spirit Drug Treated in Hainan Province",then give the data analysis and correlation analysis of the differences.Results:The Cohesion,Intellectual-Cultural orientation、Active-Recreational orientation、Organization、Expressiveness、Independence and Achievement Orientation scores of the drug taking adolescent families in Hainan province were significandy lower than normal samples in China,but the Moral-Religious Emphasis、Conflict and Control scores were significantly higher than the normal samples.Conclusions:The drug taking adolescent not only lack of well-educated families,but also has not been a good school education;most of their families belong to the low social class;adverse family environment is an important reason for drug abuse by adolescent.