The invention discloses a conveying mechanism of a cooling exhaust fan assembling machine. The conveying mechanism of the cooling exhaust fan assembling machine comprises a mounting bottom plate fixed to a rack, the upper plane of the mounting bottom plate is provided with a transverse workpiece containing plate through a supporting cylinder, a through groove is formed in the workpiece containing plate, a first transverse material blocking plate and a second transverse material blocking plate are mounted on the two sides of the through groove in the workpiece containing plate, the inner side edge of the first material blocking plate and the inner side edge of the second material blocking plate are turned upwards to form blocking strips, a workpiece channel is formed by the two blocking strips and the workpiece containing plate, and the conveying mechanism of the cooling exhaust fan assembling machine further comprises two supporting frames fixed to the upper plane of the mounting bottom plate, a transverse linear guide rail mounting plate is mounted on the two supporting frames, a transverse linear guide rail is mounted on the linear guide rail mounting plate, and a transverse moving bottom plate is mounted on a sliding block of the linear guide rail; through the above manner, the workpiece conveying effect is good, the production efficiency is greatly improved, and the production cost is reduced.