This study will provide critical data regarding the efficacy for reducing drug-and sex-related HIV transmission risk behaviors, as well as improving methadone maintenance treatment (MMT) outcomes and patient functioning of two transportable counseling models, behavioral drug and HIV risk reduction counseling (BDRC) and educational counseling (EC) as compared with the current standard of care model in MMT in China. Evidence-based counseling that is efficacious in reducing HIV risks and drug use and is feasible to provide with MMT will greatly improve the public health benefits of disseminating MMT in China and elsewhere in the world.