The Later Jin invasion of Joseon in 1627, led by Prince Amin, was a significant event in East Asian history. This invasion occurred as a retaliation against the Joseon kingdom for its support of the Ming dynasty against the Jurchens in the Battle of Sarhū in 1619. Political changes in Joseon, such as the deposition of King Gwanghaegun and the installation of King Injo, coupled with internal strife and anti-Jurchen sentiment, influenced the decision to sever ties with the Later Jin. The invasion began in January 1627 with a 30,000-strong Jurchen army under the leadership of Amin, Jirgalang, Ajige, and Yoto. Despite fierce resistance at the border, key locations like Uiju, Anju, and Pyongyang quickly fell to the invaders. The Ming dynasty sent aid to Joseon, but it was insufficient to stop the Jurchen advance.

The invasion culminated in a peace agreement on Ganghwa Island, marking a significant shift in the regional power dynamic. The terms of the treaty required Joseon to abandon the Ming era name Tianqi and offer hostages, while promising non-violation of territories between Jin and Joseon. Despite these terms, Joseon continued to maintain covert relations with the Ming dynasty, leading to dissatisfaction from the Jin leadership. The Jin invasion, while successful, highlighted the delicate balance of power and the complex diplomatic relationships in East Asia at the time.

The aftermath of the war had lasting impacts on the region. The Later Jin, facing economic hardships, forced Joseon to open markets and transfer the suzerainty of the Warka tribe to Jin, along with demanding substantial tributes. This imposition created a tense and uncomfortable relationship between Joseon and Later Jin, with deep-seated resentment in Joseon towards the Jurchens. The events set the stage for further conflict, eventually leading to the Qing invasion of Joseon in 1636, and marked the end of open peace negotiations between the Ming dynasty and the Jurchens.