Objective To evaluate the psychological intervention ettectiveness ot socioenvironmental therapyfor heroin addicts accepting compulsory isolation.Methods Totally 100 male heroin addicts accepting compulsory isolation and Labour Camp Rehabilitation were selected and randomly assigned to socioenvironmental therapeutic group (ST group,50 cases) and control group (CT group,50 cases).A two-month socioenvironmental therapy was selectively proceeding in ST group by a same psychological team,while CT group still received conventional rehabilitation.During the 6-month follow-up,self-rating anxiety scale(SAS),self-rating depression scal (SDS) and self-made questionnaires were used every 3 months,to statistically estimate psychological status of subjects.Results Before treatment,no statistically significant difference between the two groups;after treatment,SDS score of CT group was 56.16 ± 9.12,and was lower than that in ST group(48.28-± 9.55) (P ＜ 0.01) ; SAS score of ST group was 46.28 ± 7.78,and was lower than that in CT group (50.72 ± 8.32) (P ＜ 0.01).In the 3-month follow-up evaluation,depression,anxiety scores in CT and ST group were significantly lower,the difference was statistically significant (P ＜ 0.01) ; 6 months after treatment,depression,anxiety score showed was significant difference between two groups(P＜ 0.01).Conclusion Group psychotherapy especially socioenvironmental therapy is quick and long-acting in improving the psychological status of heroin addicts in aspects of depression and anxiety levels,which is distinctly evidenced by the short-term and long-term curative results.