The invention relates to a porous solid luminescent material which is a random polymer constructed and formed by mutual crosslinking of tetrabromoethylene tetrabenzyl bromide and an alcoholic hydroxyl group of beta-cyclodextrin, and a construction base element of the random polymer is a tetraphenyl ethylene cross-linked beta-cyclodextrin polymer; the porous solid luminescent material is used for absorbing dye sulforhodamine B molecules. The porous solid luminescent material provided by the invention has the advantages that the porous solid luminescent material is simple and convenient in preparation method and relatively high in yield and has solid-state fluorescence; the porous material can emit green fluorescence through 365-nm illumination under a solid state and has excellent absorption performance for a dilute solution of sulforhodamine B; the effect of absorbing the sulforhodamine B is good, solid-state fluorescence energy transfer can be generated with the sulforhodamine B molecules, and the fluorescence color gradually changes from green to yellow to orange-red along the change of the quantity of the absorbed sulforhodamine B; the solid luminescent material has wide application prospects in the field.