Abstract: During the war of resistance against Japan, faculty and students of Peking Union Medical College (PUMC) and Peking Union Medical College Hospital (PUMCH) actively participated in the national salvation movement. Previous studies have largely focused on Dr. Robert K.S. Lim's driving force in the Chinese Red Cross Medical Relief Commission, as well as Dr. Chung-en Lee's founding of Guiyang Medical College. However, there is still a lack of thematic synthesis on how the PUMCH community in Peiping carried out their resistance activities after the July 7th Incident in 1937. Drawing extensively on original archives and historical newspapers and periodicals, this paper traces the historical trajectory of PUMCH members' involvement in relief activities following Great Wall Defense in 1933, the Suiyuan Campaign in 1936, and the July 7th Incident in 1937. PUMCH members efficiently mobilized high-quality medical resources in Peiping and northern China, organized multiple relief teams to the front lines, and set up temporary hospitals to treat a large number of wounded soldiers. Through these actions, they demonstrated their patriotism and national integrity, and became an important medical force within the anti-Japanese rescue network in Peiping.