Mercantilism represents the idea of business class in feudal society. In the west，mercantilism was produced in the 14th, 15th century, reflecting the transition from natural economy to commodity economy. The first who proposed the theory of mercantilism in China is Sanghong Yang. From the angle of economic thought, Sanhong Yang and the west have similar and different mercantilism, which indicates different nations face similar or different economic issues and which reveals specific cultural tradition and era spirit of mercantilism.