Abstract: Ecosystem services are irreplaceable for human well-being and regional sustainable development. Air purification is one of the main types of ecosystem services, which is of great significance to the improvement of human settlement quality and the construction of regional ecological civilization. The ecosystem air purification service and its quantitative research results were reviewed, the source, concept and connotation of the ecosystem air purification service were elaborated, the advantages and disadvantages of the market theory method and the ecological model method for estimating air purification services were summarized, and the research practices and developments related to air purification services at home and abroad was combed. In view of the existing problems, such as the imperfect theoretical system of air purification service research, fewer research methods on temporal and spatial dynamics, relatively single ecosystem types, and insufficient research results on scale integration, it was suggested that the future research should strengthen the pertinence of the theoretical basis of ecosystem air purification services, pay attention to the dynamic and precise research method, and enhance the multi-scale integration and the diversity of ecosystem types, etc.