The present disclosure relates to an electronic label, an electronic label system and a data processing method. The electronic label includes an electronic label body and a proximity sensing module. The proximity sensing module is disposed in the electronic label body and configured to detect whether there is a human body within a certain range from the electronic label. In response, the proximity sensing module is configured to generate a corresponding detection signal when a human body is detected. The detection signal is used to obtain a duration of stay of the human body before the electronic label.