Renaissance is a European ideological and artistic movement that took place in 15 ~ 16 century, and Italy is the core area of its rise. The background of the Italian Renaissance is as follows: First, Italy is the birthplace of ancient Roman culture, rich in ancient relics and documents, which makes people interested in the research and pursuit of ancient culture. Second, the rise of Italian city-States, such as Florence and Venice, provided stable environment and economic support for independent city politics, thus creating conditions for the prosperity of culture and art. Third, Italy's developed commerce made wealthy businessmen rise, and their sponsorship and support became an important driving force for the Renaissance. Fourth, the occurrence of religious reform aroused people's doubts about religious authority, which stimulated people's pursuit of free thought and personal expression. Generally speaking, the background of Italian Renaissance is the inheritance of ancient cultural heritage, the rise of polis, the prosperity of commerce and the influence of religious reform.