The　surface-emitting　photoluminescence　spectrum　is　an　important　factor　which　directly　participates　in　the　determination　of　the　oscillating　wavelength　and　the　output　power　of　a　semiconductor　disk　laser.　Here　a　theoretical　model　for　calculating　the　surface-emitting　photoluminescence　spectrum　is　presented.　The　surface-emitting　photoluminescence　spectra　of　two　samples,　one　with　a　resonant　microcavity　and　the　other　with　an　antiresonant　microcavity,　are　calculated;　the　simulated　results　are　in　good　agreement　with　the　experimental　results.