Objective By evaluating high-quality agricultural development level, the development and current situation of agricultural development in various provinces and cities of China could be mastered accurately. Base on this, it further puts forward corresponding suggestions which can promote the high-quality agricultural development.

Method An evaluation index system based on four dimensions including agricultural digital economy development level, agricultural green development level, agricultural efficient output level and farmers' living standards was constructed. Based on the panel data of 27 provinces and cities in China from 2016 to 2020, the high-quality agricultural development level was evaluated by panel data entropy method, and its spatial-temporal evolution characteristics was analyzed by using Moran's index.

Result The high-quality agricultural development level is generally low in China (annual average = 0.25) and its regional heterogeneity was significant from 2016 to 2020. The national average score of agricultural high-quality development level in 2020 was 0.26, while the national average scores of agricultural digital economy development level, agricultural green development level, agricultural efficient output level and farmers' living standard in 2020 were 0.14, 0.06, 0.03 and 0.04, respectively. The high-quality agricultural development level in China is positively correlative with spatial and the positive correlation shows a decreasing trend, and most of provinces and cities of China are in low-level clusters and remain unchanged for a long time.

Conclusion According to the results, some suggestions as follows are proposed: Advocating green agriculture and improving the rural residential environment; promoting the development of agricultural digital economy and raising the level of agricultural output; strengthening agricultural innovation to enhance industrial competitiveness; changing the industrial model and improving the living quality of farmers; strengthening regional assistance to achieve common development.