Abstract:Tian 'anmen Rostrum was first built in the Ming Dynasty. After the reconstruction and expansion of Ming and Qing dynasties, it gradually took on a magnificent and majestic momentum. Tian 'anmen Square was formed in the Yuan Dynasty. In the early Ming Dynasty, with the reconstruction of the Beijing city wall, the square was moved south and expanded. After the liberation of Beijing, tian 'anmen Rostrum and square underwent many repairs and reconstruction in order to meet the new function needs, and gradually restored the former appearance.