Portable gas detection technology can be used for harmful gas detection, organic VOC gas detection, flammable gas detection, and single gas detection. The development of accurate early warning and隐患 detection technology is advancing rapidly, with increasing applications in pre-accident indication checks and elimination. Its direction is towards miniaturization and automation, aiming for long-term monitoring. The development of portable gas detectors allows for the early detection of leaks. Some disasters are unavoidable. How to effectively suppress and monitor early warnings, and how to reasonably utilize high-tech means for effective control of accidents that have occurred, to reduce casualties and property losses, is a practical issue that needs to be addressed as a key technology in production safety. Through the study of the early physical and chemical properties of accidents, gas detection and monitoring can effectively carry out pre-disaster suppression, allowing potential catastrophic accidents to be controlled in advance, while ensuring personal safety. The key to shifting from passive extinguishing and rescue technologies to the next-generation proactive prevention and control technologies is centered around intelligent monitoring technology.