The invention discloses a rotary lamp seat comprising a base plate, a drive member, a gear transmission mechanism and a lamp holder installing assembly. The drive member is fixedly arranged on the base plate, the drive member drives the gear transmission mechanism, the lamp holder installing assembly comprises a first rotary shaft, one end of the first rotary shaft is connected to the base plate in a transmission manner, and the other end of the first rotary shaft is rotationally connected to the gear transmission mechanism; the gear transmission mechanism is used for transmitting the rotation of the rotary shaft of the drive member to the first rotary shaft to drive the first rotary shaft to rotate, and the first rotary shaft is perpendicular to the rotary shaft of the drive member. During operation, the drive member drives the gear transmission mechanism to rotate so as to drive the lamp holder installing assembly to rotate, and the purpose of rotating a seat body can be achieved; the rotary lamp seat has the advantages of few parts, simple structure and high reliability.