Human are facing poor quality of ecosystem services (ES) under the pressure of the rapid decline in biodiversity. Large number of researches on functions of terrestrial ecosystem have been conducted to classify the benefits of ES-of which Millennium Ecosystem Assessment (MA) is one of the most important progresses. In MA, ES are divided into four categories: the providing, regulating, cultural and supporting service and the product, process and pattern of ecosystem are recognized as the core. Identification and classification of ES are objectification of ecosystem function and process of assessing ecosystem to meet human needs. Based on structure-process-function ES is implemented by ecosystem. In this process direct drivers come from the physical biogeochemical cycles and biodiversity affects the development and maintenance of ES through its property and process. In the high level of biodiversity and ecosystem function, ES shows the high level of quality and stabilization. Land use and land cover change from human activities in global change are the one of main causes of rapid decline in biodiversity and the widest drivers of ES. There is a very large gap between human needs and ES capacity across the full breadth of scales in ecosystem. As such we suggest that ecosystem size should be expanded and ecosystem function should be improved through paying attention to the ES quality in the most important areas. The focusing step in the procedure is to improve the biodiversity.