PURPOSE: An exhaust purification device for an intra-cylindrical injection-type spark-ignition internal combustion engine is provided to minimize the aggravation of fuel consumption ratio in a cold state and suppress the exhaust amount of noxious materials by improving exhaust purification efficiency while securing accelerating performance. CONSTITUTION: An exhaust purification device for an intra-cylindrical injection-type spark-ignition internal combustion engine(1) has an injection valve directly injecting fuel into a combustion chamber; a fuel injection control unit controlling fuel injection by the injection valve; and an air fuel ratio control unit controlling the burned air fuel ratio. The exhaust purification device has a catalytic converter(30) purifying noxious materials in exhaust gas; a catalyst activation-determining unit determining an activated state of the catalytic converter; a compression-stroke slight-lean operation unit injecting fuel in a compression stroke by the fuel injection control unit and performing compression-stroke slight-lean operation; and an exhaust gas flow control unit restraining an exhaust gas flow in an exhaust passage. If the catalyst activation-determining unit determines the catalytic converter is not in the activated state, the compression-stroke slight-lean operation is performed by the compression-stroke slight-lean operation unit and also the exhaust gas flow in the exhaust passage is restrained by the exhaust gas flow control unit.
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