A circuit structure for adjusting LED color temperature curve includes at least a first LED light set having plural first LED lights in series; at least a second LED light set connected with the first LED light set in parallel and having plural second LED lights in series; a current detection circuit having a first variable resistance and a first transistor; and a color temperature curve adjusting circuit having a resistance, a second variable resistance, and a second transistor, the resistance connected with the first transistor and the second transistor and the second variable resistance, an emitter of the second transistor connected with the input end of one first LED light. The current detection circuit and the color temperature curve adjusting circuit are used to accurately adjust the curve and the peak of the color temperature.