Statistics of China natural gas industry prosperity index show that:China natural gas industry prosperity index was 186.54 in the first quarter of 2021,indicating a prosperous state;the prosperity index of natural gas production enterprises was 221.46,indicating a very prosperous state.Natural gas sales companies'prosperity index reached 159.65,indicating a relatively prosperous state;the prosperity trend index of the natural gas industry in the coming year was 304.60,indicating a very prosperous state.The details are shown in Fig.1 and Table 1.