Аннотация: The article presents the socio-pedagogical project "STOP-smoking!", Aimed at preventing smoking among schoolchildren. Particular attention is paid to the description of the technology implementation of the developed project, which includes four phases. Specificity of the proposed technology is the sequential implementation of the selected stages, each of which relies on the results of the previous one and is its continuation. So, taking into account the results obtained during the diagnostic stage of the STOP-smoking project, the forms and content of the motivational, substantive-practical and final stages were selected.