宋慶齡與孫中山皆是近代中國革命運動的重要人物，孫中山創建中華民國，因而被尊稱為中華民國國父。1914年，孫中山在日本東京組中華革命黨時，宋慶齡擔任其秘書。1915年，孫宋兩人結婚，宋慶齡成為孫中山的夫人後，其政治角色逐漸由輔佐型的政治角色，朝向領導型的政治角色發展。孫中山與共產國際之間的聯繫，及與俄國的關係，在廖仲愷、宋慶齡的協助下，與共產黨有較多的聯繫，且對共產主義有進一步的了解。1925年，孫中山逝世後，宋慶齡繼承孫中山之遺志，一方面堅持落實孫中山的政治理想，另一方面長期參與中國政治，在複雜的國共關係中扮演著極重要且微妙的政治角色。宋慶齡與蔣中正的夫人宋美齡是姊妹關係，但是基於政治理念與政治立場的不同，在孫中山過世後，宋慶齡所走的政治路線，是與共產國際和中國共產黨的路線相近，因而也曾被視為是中國共產黨的「黨外之黨員」。在長期的國共兩黨的政治鬥爭過程中，宋慶齡與蔣中正常因重要的政治事件而有激烈爭論。雖然宋慶齡也在「國共合作」的過程中扮演重要角色，但是宋慶齡與蔣中正領導的國民政府長期處於對立和對抗的狀態，因而宋慶齡與「中華民國政府」間的政治關係，常呈現出相衝突的緊張關係，終至斷絕雙方關係。
Soong Ching-ling and Sun Yat-sen are both important icons in modern Chinese revolution movements. Sun is often revered as the founding father of the Republic of China for establishing the nation-state. Soong, on the other hand, was Sun’s secretary during his time in Tokyo when he founded the Chinese Revolutionary Party in 1914. After the two got married in 1915, Soong’s role as Sun’s assistant gradually transformed into a leading figure in politics.
With the help of Liao Zhong-kai and Soong Ching-ling, Sun established closer ties with the Communist International and the Soviet government which led to him gaining deeper perception for communism. Since Sun’s death in 1925, Soong took over at his behest. While preaching Sun’s tenets, Soong also participated in Chinese politics. Her role amidst the complicated relations between the Kuomintang and Chinese Communist Party (CCP) was deemed both essential and peculiar.
Soong came into conflict with Chiang Kai-shek due to different political ideologies and positions despite her younger sister Soong May-ling’s marriage with Chiang. Soong took side with the Communist International and the Chinese Communist Party after Sun-Yat-sen’s death. Once considered the CCP’s member outside of the party, Soong often had strong disagreements with Chiang on major political controversies during the civil war.
Even though Soong played a crucial role in the Cooperation between the Kuomintang and Chinese Communist Party, she remained an opponent of Chiang Kai-shek and resisted his regime of the Nationalist Government and later the Republic of China.
