PH value automatic monitoring system

The invention provides a pH value automatic monitoring system which includes a pH value automatic monitoring device and a server. The pH value automatic monitoring device comprises a pH test paper measurement module, a control module, an image collection module, an image processing module, a storage module and a wireless communication module. The control module is used for controlling a pH test paper to measure water bodies in every preset period; the image collection module is used for collecting the images on the pH test paper after water body measurement and sending the images to the image processing module; the image processing module is used for determining the pH value according to the images collected by the image collection module and then sending the pH value to the storage module; the storage module is used for storing the pH values and the measurement time corresponding thereto; and the wireless communication module is used for sending the pH value and the measurement time corresponding thereto which are stored in the storage module to the server. The pH value automatic monitoring system is reduced in pH value monitoring cost and maintaining cost.