This paper analyses the reserves of sulfur in natural gas in domestic, and introduces the production and processes of main sulfur chemicals such as sulfuric acid, liquid sulfur dioxide,methanthiol, methionine,carbon disuIfide, sulfur - bearing chemical fertilizer, insoluble sulfur, various organic or inorganic sulfonate, and various inorganic sulfides, three development routes of sulfur chemical industry, namely sulfuric acid/phosphate fertilizer,methionine network synthesis, and inorganic or organic sulfid...