A temperature-adjusted heater for transfusion includes a clamping member and a temperature-controlled unit. The clamping member defines a through hole, for a transfusion tube pass through and fixed therein. The temperature-controlled unit connecting to power supply, includes a heating member, an adjusting current circuit, and an adjusting button. The heating member is mounted in the clamping member, in communication with the through hole, and firmly against the transfusion tube. The heating member and the adjusting button are in series with the adjusting current circuit, and the adjusting button is operated to change the resistance value of the adjusting current circuit.
