The invention discloses an Ethernet-based vehicular gas bottle water pressure detecting and monitoring system. The monitoring system is characterized by comprising a monitoring computer control center, a detecting station computer control center, a two-dimensional code scanner, a printer, an Ethernet exchange, a camera, an Ethernet module, a protecting module, a protecting circuit, a power circuit and a plurality of raw water pressure detecting and control systems. The monitoring system has the advantages of effectively solving the problems that the monitoring department in a traditional vehicular gas bottle water pressure detecting process cannot carry out full monitoring in real time, is low in detecting efficiency, and cannot timely judge the real-time detection data, perform foreseeability judgment of the service life of the gas bottle, and remind users of regularly detecting; moreover, the monitoring system effectively solves the problems that detector damage and casualties can be unavoidably happened since the detector and personal safety of operators cannot be protected in many ways during the traditional water pressure detecting process.