Using historical documents and maps, this research clarifies the characteristics of construction for the city of Suwon Hwasung. King Jeong-jo, the 22th king of the Joseon dynasty, created the military city of Suwon Hwasung when he took control of military and economic power at the end of 18th century. Suwon Hwasung was intended to outdo the city of Namhan Mountain Fortress, which was built by bureaucrats. Jeong-jo chose the location of Suwon Hwasung city to gain military control, but also used it to promote economic activity. This urban policy is the most notable characteristic of Suwon Hwasung and it ensured a stable life for the people.