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The gamma butyrolactone consumption of about 56% for the production of polyvinyl pyrrolidone, about 40% for the production of N - methyl pyrrolidone. Western Europe gamma butyrolactone about 45% for the production of N - pyrrolidone, he still has 23% is applied to the production of herbicides, about 12% is used for pharmaceutical etc it is different with the United States, the same is their main production N - methyl pyrrolidone, mainly because of the organic matter USES is very wide, compared to the United States and Western Europe is somewhat different in Japan, Japanese gamma butyrolactone mainly used as the electrolyte solution, its consumption accounted for 45% ~ 45% of total consumption, this is because its science and technology developed, especially in the field of electronic technology superior makes it will gamma butyrolactone used in electrolyte solution. In our country, gamma butyrolactone mainly for the production of gamma - pyrrole, methyl pyrrolidone, polyvinyl pyrrolidone, a small number of solvents used in the production of pesticides, pharmaceutical intermediates, electrolyte solution [12]. At present, the domestic demand of about 40000 tons. Gamma butyrolactone is a kind of high value-added fine chemical products