An integrated exhaust gas recirculation (EGR) valve housing includes: a temperature control passage configured to include a first cooling channel which connects a water jacket formed in an engine to a radiator and a second cooling channel which is branched from the first cooling channel and extends to an EGR cooler cooling re-circulated exhaust gas; and an auxiliary cooling passage configured to guide cooling water introduced into the second cooling channel to the EGR valve housing, whereby it is possible to easily dispose the EGR valve housing in the engine compartment by integrating the parts through which the cooling water is discharged from the engine with the cooling water channel connected to the EGR valve housing.