新中国成立后,由于美、蒋等敌对势力不断派遣飞机入侵、入窜进行侦察、袭扰,所以人民空军从建军之初起就把国土防空摆在重要位置。国土防空作战的首要任务,是抗击敌人空中突击和侦察,保卫国家政治经济中心、首脑机关、军事要地、工业基地、交通枢纽和其他重要目标,掩护军队部署。国土防空作战虽然每次规模都不大,但是相当复杂。斗争的地区开始是以保卫北京、上海为中心,逐步扩展到东南沿海各大城市和内地 Since the founding of new China, the air and air forces have placed their national air defense defense at an important position since the founding of the People’s Republic of China since the hostile forces such as the United States and Chiang dispatched aircraft to invade and channel into the country for reconnaissance and harassment. The primary task of land-based air defense operations is to defeat enemy air raids and reconnaissance, defend the country’s political and economic center, head office, military base, industrial base, transportation hub and other important targets and cover the deployment of the military. Land-based air defense operations are not complicated at every scale. The fight area began with the defense of Beijing and Shanghai as the center, and gradually expanded to major cities in the southeast coast and the hinterland