The data of China’s national sustainable development index system shows that the overall situation of China’s sustainable development has improved steadily from 2015 to 2019，with the index value of 82.1 in 2019，an increase of 39% compared with 2015，with an average annual growth rate of about 8.7%. The improvement of sustainable development is embodied in five aspects：the strength of economic development has obviously jumped，the people’s livelihood has generally improved，the resources and environment have generally improved，the consumption and emission control has achieved remarkable results，and the effect of governance and protection has gradually become prominent. However，the data also show that the contradiction of insufficient development imbalance is still outstanding after China’s development enters a new stage，and the shortcomings in social livelihood，resources and environment are gradually highlighted.