Abstract: The Wuyishan National Park (Fujian area) Conservation-development Corridor (referred to as the “Belt”) is an important measure for Nanping City to implement the national park system. Based on the data of the “Belt” from 2017 to 2021, the green development index system was constructed. The weight coefficient of each index was determined by using the analytical hierarchy process method and entropy weight method, and the comprehensive score was calculated. The results showed that the green development level of the “Belt” has been steadily improved, and the green development levels of Wuyishan, Jianyang, Shaowu and Guangze have decreased in turn. Among them, the levels of green resources and green economy have shown an increasing trend, while the green environment level has shown a slight downward trend. Based on this, it was suggested that the “Belt” should optimize the economic structure and accelerate the transformation of development mode from the three aspects of accelerating the development of eco-tourism, coordinating the “Three Teas”, and vigorously developing ecological industries.