The invention discloses a convenient-to-adjust single-light-source shadowless operation lamp for a surgical operation, and relates to the technical field of shadowless operation lamps. The convenient-to-adjust single-light-source shadowless operation lamp comprises a supporting column, a moving mechanism is fixedly installed at the bottom end of the supporting column, a rotating mechanism is fixedly installed at the top end of the supporting column, a connecting rod is fixedly connected to the left side of the rotating mechanism, and an adjusting mechanism is fixedly installed at the left endof the connecting rod. According to the convenient-to-adjust single-light-source shadowless operation lamp for the surgical operation, sliding blocks are arranged and cooperate with a sliding way foruse, and therefore, the rotation of a rotating disc can be more stable, and the situation that the rotating disc is stuck when rotating can be avoided; the rotating mechanism, the moving mechanism andthe adjusting mechanism are arranged, and therefore, the situation that illumination dead angle and side light occur in use of the operation lamp can be effectively avoided, the use of the operationlamp by an operation doctor is more convenient, the visual field of the doctor is clearer, and the operation efficiency is improved; and a fifth bearing is arranged so that a threaded rod can rotate more stably, and the situation that the visual field of the doctor is blurred due to the fact that a shadowless lamp body shakes when the angle is adjusted can be avoided.