Abstract: In early Indian mythology， Nryana was the son of Purusha Nara. In later Brahmanism， especially in the texts of Vaishnava，Nryana gradually became identical with Visnu-Krsna. After the rising of Buddhism，Visnu（Nryana），as one of the three main gods in Brahmanism，was “ absorbed”as a guardian of Buddhism. In some Chinese sutras，“ Nryana”has been translated as “ Vajra Giant”or “ Hooklock Giant”and used to refer to Buddha or Bodhisattva. It was very common for people had faith in Nryana in the Weijin， Sui and Tang Dynasties in China. To get the supernatural force of Nryana， people conducted religious behaviors such as practicing the esoteric teachings of Nryana，using Nryana as their religious names，going on a pilgrimage to the holy site of Nryana Cave and making statues of Nryana.

Key words: Weijin, Sui and Tang Dynasties, Nryana, faith