The invention discloses a high-purity nano-alumina ceramic LED lamp holder. The high-purity nano-alumina ceramic LED lamp holder comprises a rheostat, a glass cover, an LED support seat, a support column, LED lamp installation devices, a rotary rod and a gold thread contact, wherein a slip sheet is arranged on the rheostat; the rheostat is connected with a contact panel through a conductive wire; a driver is arranged at the right end of an air protector; a switch is connected with a power supply connection hole; heat dissipation holes are formed in a lamp holder housing; and the gold thread contact is arranged in a silver colloid. The high-purity nano-alumina ceramic LED lamp holder is innovatively designed in combination with a high-purity nano-alumina ceramic LED lamp holder used at present, the lamp holder housing is produced by virtue of high-purity nano-alumina ceramic, the heat dissipation holes are formed in the side of the lamp holder housing, and the support column is arranged in the LED support seat, so that an LED lamp does not directly contact with the LED support seat, the contact area of the LED lamp and air is greatly increased, and the heat dissipation performance of the LED lamp is improved.