The Chinese Mechanical Engineering Society (CMES), founded on May 21, 1936, is a national learned organization engaged in the promotion of the art and science of mechanical engineering. CMES was chartered as a legal person at the Ministry of Civil Affairs of the People’s Republic of China.

CMES's major function is to promote development of the art and science of mechanical engineering, organize academic activities, carry out training and continuing engineering education activities, publicize technical information, provide inter-media service and safeguard the legal rights and interest of its membership.