Abstract:Tianning Temple is located in Zhengding County, Hebei Province. In 1982, the exploration group of traditional architecture in Hebei Province discovered the Underground palace at the bottom of the pagoda. Lingxiao tower underground palace is located in the middle of the tower, underground palace for brick dome top, underground palace ground brick shop plaister. There is a large lotus shaped Stone box in the center of the underground palace, which is very rare among the unearthed Stone boxes of underground palace in all parts of China. Two stone inscriptions unearthed in the palace provide an important basis for the study and reconstruction of lingxiao Pagoda in Tianning Temple.