Abstract: This paper examines the political situation of Hong Taiji's Reign and his concept of religion by describing how Hong Taiji treated his ancestral spirits in the Imperial Ancestral Temple and how he made offerings to them. Hong Taiji introduced into later Jin Dynasty Chinese rituals and made them co-existing with Manchu traditional rituals. In the Heaven and ancestral offerings ，neither did he exclude the Manchu rituals，nor infused Chinese and Manchu rituals into one. Hong Taiji needed the traditional rituals to maintain Manchu ethnic identity，and the Chinese rituals to be approved as a new dynasty in greater China. Although Hong Taiji was a great advocate of the Chinese rituals ，he took a rather realistic and utilitarian attitude toward introducing Chinese rituals into the Manchu regime.