China is experiencing an increasingly serious aging population. Cognitive function is an important factor and guarantee for the quality of life of older people. Therefore, to achieve healthy aging, this study aimed to examine the sequential multiple mediating effects of indoor ventilation frequency and cognitive function on anxiety and self-rated health in the Chinese older people population. Using the 2018 China Longitudinal Health and Longevity Survey (CLHLS) dataset, we finally selected 10,372 Chinese seniors over the age of 65. First, we de...