A temperature control apparatus for heating includes a flexible heating wire which is appropriately configured and integrated to include a temperature detection wire made of metal and having a positive temperature coefficient, a polymer thermosensitive layer having a negative temperature coefficient and getting melted at a predetermined temperate, and an electrode wire in contact with the polymer thermosensitive layer. The temperature control apparatus for heating, according to signals containing temperature information of the temperature detection wire and the polymer thermosensitive wire, can perform temperature control and wide local overheating detection, which is cost effective. The temperature control apparatus for heating, according to the electrical signal from the temperature detection wire and containing temperature information, controls the temperature of the flexible heating wire, detects the difference between the temperature obtained by converting the electrical signal from the temperature detection wire and containing temperature information and the temperature objected by converting the electrical signal from the polymer thermosensitive layer and containing temperature information. When the different exceeds a certain value, the temperature control apparatus stops the power supply to the heating wire, and determines the local heating in the flexible heating wire in an early period, thereby ensuring safety.