On most occasions, economic development is embodied with periodic characteristics. Comprehensive understanding of the economic cycle is of great significance to guiding the formulation of macroeconomic policies and maintaining stable economic growth. Since the reform and opening up, Tengzhou's economy has maintained a momentum of rapid growth, which, however, is characterized by obvious periodic fluctuations. This paper makes an in-depth analysis of the characteristics and causes of economic periodic fluctuation in Tengzhou, in order to have a comprehensive understanding of the economic cycle, and the economic law is adopted to take corresponding economic growth measures in different periods of economic development, thus achieving high-quality economic development. In this paper, the study of county economic cycle is not subject to economic theory, rather the study is conducted with a large number of historical background and local economic development characteristics. The economy of Tengzhou City, since the reform and opening up, is divided into five cycles. The conclusion is drawn that the county economic cycle is affected by macroeconomic fluctuations, industrial structure adjustment, investment and consumption fluctuations and other factors. We put forward targeted suggestions on using the economic cycle to promote high-quality economic development.