The Northeast People's Liberation Army arrived in the summer and autumn of 1948, which fundamentally changed the war situation in Northeast China. 97% of the land area and 86% of the population in Northeast China have been liberated, and industrial and agricultural production in the liberated areas in Northeast China has been developed. The total strength of the Northeast People's Liberation Army has grown to 1 10,000, with improved equipment and high morale. However, due to repeated setbacks, the Kuomintang army in Northeast China suffered heavy losses, and more than 550,000 people were divided into three unconnected areas: Changchun, Shenyang and Jinzhou. The land supply lines in Changchun and Shenyang were all cut off. The morale of the army was shaken and low. In terms of strength, the Northeast People's Liberation Army has surpassed the Kuomintang army in quantity and quality, and has the strength to destroy all enemy forces and liberate the whole Northeast in World War I..
Facing the extremely unfavorable situation in Northeast China, Chiang Kai-shek was very anxious. In order to preserve our strength, we once considered giving up Changchun and Shenyang, opening up railway transportation lines, and transferring Shenyang's main force to Jinzhou, waiting for an opportunity to move to the battlefields in North China and East China. But he is worried that giving up the Northeast will have serious political and military consequences. So it is uncertain whether to quit or not. When Chiang Kai-shek hesitated to choose the Northeast, Mao Zedong made the main force of the Northeast Field Army go south to Beining Road and attack Jinzhou, ignoring the strategic decisions of Changchun and Shenyang, and prepared to annihilate the enemy who came from Shenyang to help him when he fought Jinzhou. He also called on the Northeast People's Liberation Army to establish its determination to fight an unprecedented war of annihilation, that is, to dare to fight a decisive battle with enemy troops when they come to Shenyang for help and annihilate them on the spot.