Abstract: China's Natural Gas Industry Prosperity Indexes are a set of indexes issued quarterly by Southwest Petroleum University since the first quarter of 2016. The Natural Gas Industry Prosperity Indexes cover 5 second level indexes(macroeconomic indexes, natural gas industry expert indexes, natural gas import indexes, natural gas production indexes and natural gas sales indexes)and 23 third level indexes. And the Indexes of Natural Industry Prospect in the coming year is issued too.The Natural Gas Industry Prosperity Indexes have been on the rise in recent years, which is an objective reflection of the real performance of natural gas industry in China:investment in the natural gas industry has kept increasing for years, natural gas production and sales have risen steadily, China's dependence on overseas natural gas has slowed down, natural gas demand and supply is approaching a balance,and natural gas industry is quickening its marketization reform. The present paper intends to analyze the fluctuation of China's Natural Gas Industry Prosperity Indexes in 2019, and explore the inner driving forces for the continuous rise of natural gas industry prosperity.

Key words: natural gas industry, natural gas import, natural gas production, natural gas sales, prosperity indexes