The statistics of the China natural gas industry prosperity index show that it reached 154.18in the third quarter of 2019, indicating a relatively prosperous state.The prosperity index of natural gas production enterprises reached 166.75, indicating a prosperous state.Natural gas sales companies' prosperity index reached 146.65, indicating a relatively prosperous state, and the prosperity trend index of the natural gas industry in the coming year is 223.28, indicating a very prosperous state.The details are shown in Fig.1 and Table 1.