A　light　trapping　structure　of　solar　cell　is　proposed　by　the　theory　of　light　scattering　and　guided　mode　resonant.　The　porous　anodic　alumina　(PAA)　is　used　as　a　scattering　layer.　The　thicknesses　of　the　model　are:　window　layer　(AZO)　is　320　nm,　buffer　layer　(In2S3)　is　65　nm　and　absorbing　layer　(SnS)　is　660　nm.　The　simulated　and　experimental　results　show　that　the　absorption　of　solar　cell　structure　can　be　enhanced　by　light　scattering　and　guided　mode　resonant.　The　absorption　is　enhanced　by　about　3%　by　the　light　scattering　structure.　This　design　can　optimize　the　absorption　spectra　of　this　film　solar　cell　and　improve　the　absorption　ability　of　near-infrared　light.　The　absorption　at　the　wavelength　of　950　nm　is　enhanced　to　85%,　and　the　solar　energy　is　better　used.