Wooden architecture sites are important archaeological objects in southern China. Existing archaeological studies generally believe that the settlement architecture of the Hemudu period is single-story pile-dwelling. Because of its unique geological conditions, a large number of well-preserved wooden pillars have been unearthed in the Tianluoshan site, Zhejiang province, China. Based on the huge settlement founded under wooden pillars at this site, the historical load on the wooden pillar was calculated in reverse according to the calculation method of foundation settlement. Then the tribal architectural form at that time can be inferred according to the layout map of the wooden pillar at the Tianluoshan site. The results show that the Hemudu culture could build multistory buildings already, which presumed to be sacrificial buildings.