An exhaust gas control apparatus for an internal combustion engine, the exhaust gas control apparatus including an exhaust gas cleaning portion (11, 12) which is disposed in an exhaust system of the internal combustion engine mounted in a vehicle, and which collects particulate components contained in exhaust gas, and in which sulfur compounds contained in the exhaust gas are accumulated, wherein in the exhaust gas control apparatus, exhaust gas is cleaned and a recovery process for the exhaust gas cleaning portion (11, 12) is executed, the exhaust gas control apparatus characterized by comprising: control means for estimating an amount of deposition of the particulate components and an amount of accumulation of the sulfur compounds in the exhaust gas cleaning portion (11, 12), and reducing agent valve or reducing agent addition device or glow plug or electric heater for raising the temperature of the exhaust gas cleaning portion (11, 12); wherein in the control means, an oxidation mode and a sulfur release mode are provided as modes in which the temperature of the exhaust gas cleaning portion (11, 12) is controlled to be raised; wherein in the oxidation mode, the particulate components deposited in the exhaust gas cleaning portion (11, 12) are removed from the exhaust gas cleaning portion (11, 12) by oxidizing the particulate components on a condition that the estimated amount of deposition of the particulate components in the exhaust gas cleaning portion (11, 12) has reached a removal-demanding amount of the particulate components; wherein in the sulfur release mode, the sulfur compounds accumulated in the exhaust gas cleaning portion (11, 12) are released from the exhaust gas cleaning portion (11, 12) by a temperature-raising control, wherein a temperature of the exhaust gas cleaning portion (11, 12) is raised into a temperature range of 500° to 550°C in which the sulfur compounds are released and generation of white smoke of the sulfur compounds in atmosphere is restrained, when the estimated amount of accumulation of the sulfur compounds reaches a release-demanding amount and when the condition for the oxidation mode is fulfilled; and wherein the control means executes the sulfur release mode prior to execution of the oxidation mode; characterized in that the temperature of the exhaust gas cleaning portion (11, 12) is gradually raised from about 500°C to about 550°C in the sulfur release mode. control means for estimating an amount of deposition of the particulate components and an amount of accumulation of the sulfur compounds in the exhaust gas cleaning portion (11, 12), and reducing agent valve or reducing agent addition device or glow plug or electric heater for raising the temperature of the exhaust gas cleaning portion (11, 12); wherein in the control means, an oxidation mode and a sulfur release mode are provided as modes in which the temperature of the exhaust gas cleaning portion (11, 12) is controlled to be raised; wherein in the oxidation mode, the particulate components deposited in the exhaust gas cleaning portion (11, 12) are removed from the exhaust gas cleaning portion (11, 12) by oxidizing the particulate components on a condition that the estimated amount of deposition of the particulate components in the exhaust gas cleaning portion (11, 12) has reached a removal-demanding amount of the particulate components; wherein in the sulfur release mode, the sulfur compounds accumulated in the exhaust gas cleaning portion (11, 12) are released from the exhaust gas cleaning portion (11, 12) by a temperature-raising control, wherein a temperature of the exhaust gas cleaning portion (11, 12) is raised into a temperature range of 500° to 550°C in which the sulfur compounds are released and generation of white smoke of the sulfur compounds in atmosphere is restrained, when the estimated amount of accumulation of the sulfur compounds reaches a release-demanding amount and when the condition for the oxidation mode is fulfilled; and wherein the control means executes the sulfur release mode prior to execution of the oxidation mode; characterized in that the temperature of the exhaust gas cleaning portion (11, 12) is gradually raised from about 500°C to about 550°C in the sulfur release mode.