The fast recognition of explosives is of great importance in national defense and security fields and is also an enormous challenge for experimental detection due to the sample complexity.Development of a simple,quick and accurate method has been urgently demanded so far.In the work,we combined Fourier transform-infrared spectroscopy(FT-IR)with support vector machine to propose a rapid and sensitive approach to identify the composition of various polymer bonded explosives(PBX),including single-component,binary-component and ternary-component PBXs.