To provide a blower which effectively performs the blocking of disturbance according to the usage of a kitchen, prevents the leakage of cooking exhaust gas, and are not uselessly operated, and to provide an exhaust device.

A exhaust air blowing system is disposed in front of a bar-type kitchen counter equipped with a heating cooker and a sink, and equipped with a first blower forming an air curtain at least over the whole length in the width direction of the heating cooker, a second blower forming an air curtain at least over the whole length in the width direction of the sink, and the exhaust device provided above the heating cooker.