To suppress impairment of the exhaust gas control function of exhaust gas controlling catalyst by excessive rise of the catalyst temperature even when the engine speed of an internal combustion engine is reduced in a state of much deposition of particulate matters while recycling the catalyst.
An exhaust gas control apparatus includes a second catalyst converter 35 having an exhaust gas control function in an exhaust passage 14 in an engine 10. The second catalyst converter 35 is recovered by burning and removing particulate matters deposited in the second catalyst converter 35. In the exhaust gas control apparatus, when the engine 10 (a vehicle) is decelerated while an amount of the deposited particulate matters is large during recovery of the catalyst, an increase in the amount of intake air in a combustion chamber 13 over the small amount of the deposited particulate matters is suppressed by operating an intake throttle valve 18 to the closing side or the like.
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