A light-emitting (LED) fountain light with a self-cleaning lens includes a light body with a central hole, a light housing surrounding the light body, a nozzle provided in the light housing and located in the central hole, a central hole pressing ring sleeved in the central hole, LED light beads arranged between the central hole pressing ring and the light housing and sealed by a sealant, a driving mechanism provided between the nozzle and the central hole pressing ring, a cleaning mechanism provided on a surface of the light body to scrape off algae and other dirt, and a transmission mechanism provided between the driving mechanism and the cleaning mechanism. In the LED fountain light, scrapers are rotated forward and backward once to effectively clean the algae and other dirt on the surface of the LED fountain light.