The lubricating oil monitoring and analysis system is a device used to monitor the condition and performance of various lubricating oils, such as hydraulic oil, lubricating oil, gear oil, and transmission oil. It employs real-time monitoring of multiple parameters of the oil, including temperature, viscosity, cleanliness, metal particles, water content, water activity, density, saturation, and dielectric constant. This system helps users to promptly understand the operating status of the oil, predict equipment failures, and perform maintenance, thereby extending the lifespan of the equipment and improving its reliability and safety.