To provide a temperature monitoring system for an induction heating device capable of effectively performing a maintenance and inspection operation in a short time by detecting temperature abnormality while temperature conditions of a bus-bar and a joining bolt of the bus-bar are monitored with a simple device without having influence of an induction magnetic flux from a heating coil and by planning locations to be inspected and a maintenance plan in advance.

Temperature-sensitive capsules 17 in which a liquid 20 to generate a smelling gas 19 is sored in a container 18 formed of a non-magnetic material, and sealed with a solder 21 to melt at a designated heat-sensitive temperature are mounted on the bus-bar 8 and the joining bolt 16 of the bus-bar 8 of a power source section 5 covered by a cover 9 of the induction heating device; a smell detector 22 to detect the smelling gas 19 is mounted inside an upper part of the cover; and the smell detector 22 is connected with the monitoring system 23.