Duke of Zhou is a dream interpretation book based on human dreams, which explains seven kinds of dreams. The Duke of Zhou in the book is Zhou Gongdan, and Confucius' dream of "I no longer dream of Duke of Zhou" often appears in Confucianism. Duke Zhou is a frequent figure in Confucius' dreams. In China, where Confucianism has dominated the culture for a long time, Duke Zhou is inevitably directly associated with dreams. China's culture is extensive and profound, and the ancients have rich experience in dream interpretation. However, we should treat China folk customs dialectically. First, take its essence and discard its dross. Recognized dream interpretation has been passed down to this day: dreaming of a big fish or a big snake represents good luck, dreaming of earthquakes and family changes, and so on. If this special scene appears in a dream, we can understand it by interpreting it. If we dream of a normal life scene, we suggest not to make a fuss about the fortune on the Internet. After all, we live in dreams and reality every day, and we are a little nervous. But these cannot be explained by science after all. We live in a world dominated by science, and theological things are still used for entertainment.