Raman spectrometer is widely used in the field of chemical research, polymer materials, biomedicine, drug testing, gem identification, etc. Miniaturization and on-site detection of the spectrometer are the two most important directions in the future. With its small volume and convenience to detect, portable Raman spectrometer supplies a non-destructive method for rapid detection in real-time detection field, such as drug testing, environmental testing, security, etc. The principle and constituent of Raman spectrometer are introduced briefly. The status and progress of domestic and international industrial portable Raman spectrometer at home and abroad are reviewed.