A temperature control throttle device for a combustion engine, wherein the temperature control throttle device comprises: a first throttle; a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline are connected to the same side of the first throttle in an air flow direction in parallel, and wherein the second pipeline is provided with a heat exchanger for heating air flowing through the second pipeline with engine coolant, engine oil or engine exhaust gas as a heat source, wherein the first pipeline and the second pipeline are located upstream of the first throttle, and the first throttle has a first inlet connected to the first pipeline, a second inlet connected to the second pipeline, and an outlet connected to an engine air-intake manifold; or, the first pipeline and the second pipeline are located downstream of the first throttle and are both connected to an engine air-intake manifold, and the first throttle has an air intake inlet, a first outlet connected to the first pipeline and a second outlet connected to the second pipeline, wherein two ends of a valve body of the first throttle are provided with a first blocking member and a second blocking member, respectively, wherein when the valve body is in a horizontal state, the first blocking member and the second blocking member form sealing with two side walls of the first throttle, to prevent air from passing through the first throttle, while the first blocking member also blocks the second inlet or the second outlet, respectively, wherein, as the valve body rotates, a blocking degree of the first blocking member to the second inlet or the second outlet, respectively, gradually decreases, and when the valve body rotates over a predetermined threshold angle, the sealing between the first and second blocking members and the two side walls of the first throttle is released. a first throttle; a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline are connected to the same side of the first throttle in an air flow direction in parallel, and wherein the second pipeline is provided with a heat exchanger for heating air flowing through the second pipeline with engine coolant, engine oil or engine exhaust gas as a heat source, wherein the first pipeline and the second pipeline are located upstream of the first throttle, and the first throttle has a first inlet connected to the first pipeline, a second inlet connected to the second pipeline, and an outlet connected to an engine air-intake manifold; or, the first pipeline and the second pipeline are located downstream of the first throttle and are both connected to an engine air-intake manifold, and the first throttle has an air intake inlet, a first outlet connected to the first pipeline and a second outlet connected to the second pipeline, wherein two ends of a valve body of the first throttle are provided with a first blocking member and a second blocking member, respectively, wherein when the valve body is in a horizontal state, the first blocking member and the second blocking member form sealing with two side walls of the first throttle, to prevent air from passing through the first throttle, while the first blocking member also blocks the second inlet or the second outlet, respectively, wherein, as the valve body rotates, a blocking degree of the first blocking member to the second inlet or the second outlet, respectively, gradually decreases, and when the valve body rotates over a predetermined threshold angle, the sealing between the first and second blocking members and the two side walls of the first throttle is released.