To provide a ventilation method for tunnel work and ventilation device for tunnel work capable of minimizing the diffusion area of dust in the vicinity of a working face as much as possible and enhancing the suction efficiency of the dust.

Fresh air is blown out from a position separated from the working face K toward the pit mouth L side toward the working face to form an air curtain C near the working face, and the air near the working face is sucked, whereby the air near the working face is discharged while moving the air curtain toward the working face.