The utility model discloses a LED ceiling lamp with adjustable heat dissipation speed, comprising a lamp holder, a lampshade and a lamp housing, wherein the lamp housing is located at the lower end of the lamp holder, the lampshade is located at the lower end of the lamp housing, a first heat dissipation fan and a second heat dissipation fan are respectively provided at the two ends of the lower surface of the lamp holder, a temperature relay is provided at one side of the second heat dissipation fan, and the second heat dissipation fan is electrically connected with the temperature relay, a heat dissipation hole is贯穿设于the side wall of the lamp housing, and the heat dissipation holes are provided in a plurality of groups. The utility model, by setting a first heat dissipation fan and a second heat dissipation fan, and electrically connecting the second heat dissipation fan with the temperature relay, when the internal temperature of the ceiling lamp is too high, the temperature relay is energized, so that the second heat dissipation fan is started, so that the second heat dissipation fan and the first heat dissipation fan perform heat dissipation work synchronously, the heat dissipation speed is fast, and it is convenient to use, and is suitable for being widely promoted and used.