自1949年新中国成立以来,根据实际情况,我国的省级行政区划先后有几次大的变迁。1.1949年新中国成立之初,我国总计有省级行政单位49个(其中:30个省,12个直辖市,5个行署区,1个自治区,1个地方)。即:北京市、天津市、河北省、山西省、平原省、察哈尔省、绥远省、沈阳市、抚顺市、鞍山市、本溪市、辽东省、辽西省、吉林省、黑龙江省、松江省、热河省、旅大行署区、西安市、陕西省、甘肃省、宁夏省、青海省、新疆省、上海市、南京市、山 Since the founding of New China in 1949, according to the actual situation, there have been several major changes in China’s provincial administrative divisions. 1. At the beginning of the founding of New China in 1949, China had a total of 49 administrative units at the provincial level (including 30 provinces, 12 municipalities, 5 administrative departments, 1 autonomous region, and 1 local government). Namely: Beijing, Tianjin, Hebei, Shanxi, Plain, Chahar, Yuanyuan, Shenyang, Fushun, Anshan, Benxi, Liaodong, Liaoxi, Jilin, Heilongjiang, Songjiang, Rehe, Luda, Xi’an, Shaanxi, Gansu, Ningxia, Qinghai, Xinjiang, Shanghai, Nanjing, Shan