Abstract: New energy power generation is an important measure taken by the countries to replace non-renewable energy sources so as to achieve sustainable utilization of power resources under the sustainable development strategy. Wind power and photovoltaic power generation are clearly defined as the key development fields of renewable energy. These big power generation facilities will have a great impact on the original seismic observation environment. Based on the electromagnetic observation project of the Xuzhuangzi station of Tianjin, aiming at the wind power and photovoltaic power generation facilities in the observation area around the station in recent years we analyzed the temporal and spatial changes of electromagnetic observation data in different observation environments by the field experimental measurement, and summarized the influence characteristics of the construction and operation of wind power generation and photovoltaic power generation on electromagnetic observation environment interference. The results show that the impact of wind turbine is significantly less than that of photovoltaic power system on the electromagnetic observation environment, which can be regarded as an interference point to regulate the distance between wind turbine and observation facilities. In order to ensure that the photovoltaic power system does not affect the electromagnetic observation, it is necessary to treat each system as a whole and maintain a sufficiently large separation distance between them. This paper can provide a reference for the protection and evaluation of electromagnetic observation environment by building similar new energy power generation equipment in the seismic field, which is of important practical significance for protecting the observation environment of seismic stations.