PROBLEM TO BE SOLVED: To provide a molding machine heater capable of eliminating temperature unevenness without increasing the number of temperature control regions.SOLUTION: A heater 43 (Refer to figure 12.) of an intermediate region (the heater for a temperature control region 2) of the conventional technique is replaced with the molding machine heater 45 (the second heater) and the molding machine heater 45 is connected to a heater 42 for an adjacent temperature control region 1 and another heater 44 for another temperature control region 3 in parallel. As a result, the operating ratio of the molding machine heater 45 becomes intermediate between that of the heater 42 for the temperature control region 1 and that of the heater 44 for the temperature control region 3 so that the temperature control region 1 can be connected to the temperature control region 3 by a smooth temperature change and the number of the temperature control regions, in each of which the temperature is controlled by using the temperature detected by a thermocouple 41, can be decreased by one to realize a cost decrease.