Abstract
This article introduces the source and utility circumstance of the C3 source (propane and propylene) in China. The utility circumstance of the C3 is discussed in detail. For example, the C3 source is used to fire as the fuel; it is applied to inhibit the polymerization reaction as the polymerization inhibitor; the C3 source is produced in the processing of acetonitrile; the C3 source is used to generate acraldehyde and propylene. According to the full utility of the C3 source, their good economic and social benefits are obtained.