In recent years, due to the excessive use of fossil fuels has led to a gradual increase in greenhouse gas concentrations, in order to avoid the continued deterioration of the global climate, countries have gradually begun to rise the trend of the use of green and clean energy, photovoltaic power generation by virtue of its non-polluting, sustainable and other advantages in China is in the high-speed stage of development, which is in the province of Qinghai, by virtue of its vast geographical area, sparsely populated, and other advantages in the national photovoltaic installed capacity continues to be in the leading position in consecutive years. The province of Qinghai has been in the leading position in terms of installed PV capacity for years. This study takes the photovoltaic park in Gonghe County, Qinghai Province, as the research object, and continuously monitors the carbon flux in the study area based on the vorticity correlation observation system, analyzes the characteristics of the changes in carbon flux and its influencing factors under different time scales in the study area, and clarifies the influencing mechanism of the environmental factors on the carbon flux. The following results were obtained: the annual totals of NEE (net ecosystem carbon exchange), Re (ecosystem respiration), and GPP (gross primary productivity of ecosystems) in the Qinghai Republic PV Park were –60.56, 171.15, and 231.72 gC-m^–2, respectively, during the period of June 2021 to May 2022, and the study area in general showed a “carbon sink”.