Caravaggionism has influenced the whole of Europe and pushed realistic art to a new stage. The emergence of Caravaggio's art with distinctive democratic thoughts is precisely related to the turbulent times in Italy. From16th century to17th century, the Italian people's uprising struggle continued, which also affected some artists with low backgrounds. Their repression and resistance will inevitably be reflected in their works of art, and Caravaggio's appearance, like Bruno and Galileo, is a historical necessity.