To provide a ventilating structure that is inexpensive and easy in fitting, and also that is provided with a ridge member not projecting from the ridge.

A ventilating hole 3 that has been provided to a roof for ventilating the air in an attic is covered with a ridge member 2, and also the ridge member 2 is covered with ridge tiles 1, so that a sense of incompatibility beween the ridge tile 1 and the ventilating ridge member 2 of diffent materials can be eliminated, and also the ridge member 2 is prevented from being projected from the ridge. Further, the ridge member 2 is formed by a flexible material so that it is deformed when the ridge tile 2 is abutted on the ridge member, and the ridge member 2 is covered with the ridge tiles 1 so as to be out of sight.