In late Tang Dynasty，there was a special Japanese Buddhist called Prince Takaoka. When he was banished from Prince imperial，he shaved his head and became a Buddhist monk and traveled from Japan to Chang’an，and from Guangzhou to India. By investigating the change of Takaoka’s life experience，the route to China and his communication with Chinese people，this paper combs out the life track of a Japanese Buddhist seeking Buddha dharma. By identifying the origins of the Japanese copper bell in Mingzhou Kaiyuan Temple and the influence of the bhikkhu-sangha in PuGuangwang Monastery in Sizhou on Japan，this paper points out that Takaoka’s entering China and seeking Dharma has promoted the cultural exchange and integration between China and Japan.