Water purifier, server, water purifier filter element data automatic updating method and device

The invention provides a water purifier, a server and a water purifier filter element data automatic updating method and device, and relates to the technical field of water purifiers, the water purifier comprises a filter element and an identity mark reading device, and the filter element is provided with an identity recognition mark. Controlling an identity mark reading device to read an identity identification mark of the filter element so as to obtain historical filter element data of the filter element; and calculating the current filter element data of the filter element according to the historical filter element data, and controlling the identity mark reading device to write the current filter element data of the filter element into the identity identification mark. According to the water purifier filter element data automatic updating method provided by the invention, the electronic tag is embedded into the filter element, and the use data of the filter element is written into the electronic tag of the filter element, so that the function of automatically updating the use data of the filter element is realized, and the problem that the use data of the filter element is lost when a water purifier controller or the filter element is replaced is solved.