A phosphor coating method for fabricating a light-emitting semiconductor is provided. The phosphor coating method comprises the steps as follows: First a light emitting semiconductor wafer having a plurality of die units formed thereon is provided, and a photoresist is then formed on the light emitting semiconductor wafer to cover the die units. A pattern process is conducted to form a plurality of openings associated with the die units, whereby each die can be exposed via one of the openings. Subsequently, a compound mixed with phosphor is filled into the openings.