The invention discloses a high-radiating-efficiency type module power combined radiator. The high-radiating-efficiency type module power combined radiator comprises a power substrate on which a temperature control switch, a transformer and a power switch are arranged, a fixing pressing plate, a radiating aluminum block and a radiating plate; the fixing pressing plate comprises a first fixing pressing plate and a second fixing pressing plate; the radiating plate is composed of three cuboid surfaces, namely, a top surface plate, a first side plate and a second side plate, and every two surfaces are adjacent; the first fixing pressing plate is positioned at one corner of the top surface plate; the radiating aluminum block is positioned on the top surface plate and is adjacent to the first fixing pressing plate; the second fixing pressing plate is positioned on the second side plate. According to the high-radiating-efficiency type module power combined radiator, the area of the whole radiator can be increased through the power supply employing the combined radiator scheme and working in a steady state according to the comparison test carried out under the same input/ output condition and environmental temperature, by being compared with the traditional mode of radiating an MOSFET and a rectifier diode only, and moreover, the temperature raise of the transformer can be effectively reduced by more than 10 DEG C.