The article examines the concept of "open doors" and economic integration, which is implemented by Vietnam in the course of its progressive economic and political reforms. Particular attention is paid to the Vietnamese position in the preparation of agreements on new mega-partnerships - the Trans-Pacific Partnership, the Regional Comprehensive Economic Partnership and the FTA of the EU - Vietnam. It is noted that the experience of Vietnam can be used by the EAEU countries both with the expansion of cooperation within the framework of the agreement on the FTA of the EAEU - Vietnam, and in the preparation of new agreements of the EAEU on the FTA with third countries.