A single-use dispenser using air pressure and includes an outer vessel in which air and content material are charged, a fixed body coupled to an open upper end of the outer vessel, a valve installed in the fixed body for selectively dispensing the content material using pressurized air, and a push button coupled to a top of the valve for pushing the valve, thereby spraying out the content material and air, wherein the valve includes a hollow body, a hollow valve body elastically supported to a top of the body and moving into and out of a hollow of the body, a packing member installed on the valve body for blocking an orifice pipe, and an air suction hole formed to penetrate the body for supplementing air pressure of the outer vessel.