Abstract: Four environmental factors，including indoor and outdoor temperature and humidity，solar radiation and photosynthetic effective radiation were continuously observed from August 2017 to August 2018 in Shunyi district，Beijing through automatic environmental meteorological station，to explore change rule of different environmental factors between indoor and outdoor and season.Results showed that indoor and outdoor temperatures had a very significant correlation，with indoor temperature always higher than outdoor，and the temperature difference between indoor and outdoor gradually increased with the spring to winter seasons.The outdoor humidity was greatly affected by precipitation，so the outdoor humidity was higher in summer and autumn than indoors，while the winter and spring were opposite.The annual solar radiation and photosynthetic effective radiation were higher in the outdoor area，and the seasonal radiation was greatly affected by weather conditions.Outdoor solar radiation and photosynthetic effective radiation were both higher than indoor radiation，and inter-season radiation was greatly affected by weather conditions，and the maximum value of radiation was in spring.