During the Cold War，Canada established an initial cooperative relationship with Southeast Asia，with some loosening and coldness in the bilateral relationship after the end of the post-Cold War period. With the emphasis on Southeast Asia in the U.S. Indo-Pacific Strategy and driven by Canada’s economic and diplomatic interests，in recent years，the Canadian government has actively upgraded its political relations with ASEAN to a strategic relationship，strengthened its political engagement with Southeast Asian pivot countries，accelerated the negotiation of FTA，and comprehensively developed its economic cooperation mechanism，emphasized both traditional and non-traditional security engagements，and strengthened its cooperation with Southeast Asian pivot countries. It has also strengthened humanistic exchanges to enhance the trust of Southeast Asian societies of Canada. The main drivers of the Canadian government’s development of relations with Southeast Asia are the traditional constraints on Atlantic trade，the realization of ASEAN’s enormous economic potential，Canada’s strategic requirement to respond to its allies，and the need for a tradition of middle-income diplomacy. In the short term，with higher domestic confidence in profiting from Southeast Asia，more incentive to expand political relations，and a stronger willingness to develop security cooperation，Canada’s cooperation with Southeast Asia will take on a new level. Of course，we also need to continue to pay active attention to the impact and challenges of the new development of Canada’s relations with Southeast Asia on China.