A cloud server and an observation system of the physiological status information compiled. When the user uses difference health care devices, the cloud server receives a physiological status information automatically and classifies physiological status information according to the kinds of the health care device. The observation system comprising a client, a health care device, and a cloud server. The health care device detects the physiological status information of the user. The health care device transmits the physiological status information to the cloud server. The cloud server judges the kinds of the health care device according to the species information. The cloud server records the physiological status information in order.. The user can browse the physiological status information on the cloud server via the client.
