The present invention discloses a method for producing fluorescent powder for aperture mask-type plasma display screen; the key point of the method is: after the three primary colors are coated, sand blasting under high pressure is performed to blast open the pin holes blocked by the fluorescent powder on the aperture mask; the sand blasting pressure is controlled at 1.1-10 atmospheric pressure, and the sand size is 1/100-1/2 of the pin hole diameter. The present invention accomplishes the task of production of fluorescent powder film for flat TV sets, and is simple, highly efficient, and favorable for improving production rate and quality and improving display quality of flat TV sets.