Engine system having a cooling water control valve according to an embodiment of the present invention is being supplied to the cooling water pump, cooling water is pumped by the coolant pump for pumping coolant to the first exhaust side water jacket, a first discharging into the intake side water jacket the cylinder head, the cooling water the cooling water that is pumped from the pump 2, the intake cylinder block being supplied to the exhaust side water jacket exhaust to the second intake-side water jacket, and the cooling water discharged from the first intake side water jacket of the cylinder head and oil cooler for blocking the cooling water discharged from the second intake side water jacket of the cylinder block as an optional and includes a cooling water control valve that respectively control the cooling water supplied to the at least two heat exchangers, cooling the heat exchangers oil, the heat of the heater core, or cooling water for the cooler not know, indoor heating for cooling the recirculated exhaust gas may include a radiator for radiating to the outside.