The word "music" in Japanese originates from China. Chinese and Japanese cultures, including music, have certain similarities. Through the system of sending envoys to the Tang Dynasty, Japan brought the advanced culture of the Tang Dynasty back to Japan, which promoted the parallel growth and comprehensive development of literature, music, painting, architecture, medicine and other fields, and restored a relatively closed Tang culture for the localization of music and art. The space establishes a panoramic view of the interactive transformation of cultural forms and a holographic cultural ecological atmosphere. Changyin, Shengyin, learned monks, foreign students, and folk people constituted several channels for Sino-Japanese music exchanges in the Tang Dynasty. The musical cultural exchange between China and Japan in the Tang Dynasty had the characteristics of universality, officialness, subjectivity, regionality, and imbalance. Sino-Japanese cultural exchanges reached their peak in the Tang Dynasty. Although this was the inevitable result of long-term economic and cultural exchanges between the two countries, it was also deeply related to the political friendship between the two countries and their unified and stable political and cultural environment. During this period, both countries were in a state of peace and prosperity at home, and a harmonious, positive, and independent cultural exchange environment was formed at home and abroad. This gave both Chinese and Japanese cultures a vigorous character, great openness, and inclusiveness. It has also benefited a lot from Sino-Japanese music exchanges.