The present invention relates to an intake and exhaust apparatus of a vehicle, and more particularly, to an intake and exhaust apparatus of a vehicle, which detects and alerts a temperature inside a catalytic converter or a carrier to a predetermined temperature or higher, And an alarm device.;In the conventional catalytic converter of the vehicle, there is no warning device informing the driver that there is a danger of overheating of the inner drum and high temperature corrosion of the inner catalyst, and the harmful exhaust which is not purified due to the failure of the catalytic converter, There is a problem that the performance of the engine is deteriorated while the gas is directly discharged.;The present invention is based on the premise that when the catalytic converter of a vehicle is overheated and there is a risk of corrosion of the container stored therein, it is warned by the driver to take appropriate measures, The discharge of the harmful exhaust gas and the deterioration of the performance of the engine can be prevented in advance.
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