To provide a tunnel ventilation control method capable of performing a control more precisely in energy saving, system durability, or failure countermeasures in the ventilation of a tunnel.

In a tunnel ventilation control method, a plurality of air blowers capable of making an air blow adjustment by a blade angle as well as an air blow adjustment by rotation speed, and the operational conditions of a plurality of these air blowers are controlled in accordance with air pollution within the tunnel, in which to the whole required air blow amount a proposed operational pattern is selected from operational patterns in combination of each parameters of the number of operational air blows, operation speeds of respective operated air blowers, and the blade angles of respective operated air blowers, and an operational pattern is decided as a most suitable pattern from the proposed patterns which has a minimum energy for ventilation, and no deviation of an operation accumulative time in each air blower, and a minimum switchover frequency of the stop and operation of the blower, and a minimum switchover frequency of the rotation speed during an operation of the air blower.