A portable spectral detection module is designed to direct against the issue of most spectrometers currently available in the market with large mass and volume,which making them inconvenient to carry and operate.A low-cost spectrometer system with portability and simple operability consisting of the module,wireless transmission connected client and cloud server is described.The system can can be quickly and flexibly put into use in necessary situations,meeting the needs of portable use of spectrometers.