A hydrogen generator electrically coupled to a cloud monitoring systemcomprises a hydrogen generating device, a monitoring device, a networkdevice, and a controlling device. The monitoring device monitors the machinecondition of the hydrogen generating device and generates a condition signal.The network device selectively transmits a machine information including thecondition signal to the cloud monitoring system. The controlling devicereceives an operating parameter from the cloud monitoring system via thenetwork device and controls the hydrogen generating device according to theoperating parameter. The hydrogen generator monitoring system of the presentinvention collects the relevant data of the user using the hydrogen generatorand tracks the health status of the user to perform big data analysis.