Provided is an apparatus for jetting compressed air and a method of manufacturing the apparatus. The apparatus includes: an air intake pipe having a discharge hole, through which compressed air received from outside the apparatus is discharged, formed on an outer surface having a curved or multilateral shape; and an amplifying unit having a contact surface combining to the outer surface by having a curved or multilateral shape corresponding to the outer surface, and including an inlet portion wherein an inlet hole corresponding to the discharge hole is formed on the contact surface, and an outlet portion for amplifying and discharging the compressed air received through the inlet hole on the contact surface. As such, by forming the contact surface of the amplifying unit to have a curved or multilateral shape corresponding to the outer surface of the air intake pipe, the contact surface of the amplifying unit and the outer surface of the air intake pipe may be closely and uniformly bound together. Accordingly, the flow of the compressed air flowing into the amplifying unit through the air intake pipe may be constant and the compressed air may be prevented from being lost to outside the apparatus, and thus jetting efficiency of the compressed air discharged through the amplifying unit may be increased while instantly jetting a large amount of air by discharging surrounding air with the compressed air.