A　highly　efficient　receiver　is　required　because　re-radiation　loss　increases　dramatically　with　increased　working　temperature.　Among　a　large　number　of　receivers,　the　fixed-bed　Particle　Solar　Receiver　(PSR)　represents　a　new　pathway　to　high　temperature　with　maximum　overall　thermal　efficiency.　The　incoming　solar　radiation　can　penetrate　deeper　into　the　fixed-bed　PSR　filled　with　semi-transparent　quartz　and　ceramic　particles　(spheres　or　Raschig　rings),　resulting　in　an　increased　volumetric　effect.　Reports　show　that　an　optimized　PSR　can　realize　overall　receiver　efficiency　of　around　92%　at　outlet　temperatures　above　1000　K,　and　achieve　the　annual　temperature　above　1000　K　over　65%　annual　operating　hours　integrated　with　a　concentrated　solar　power　(CSP)　system.　To　fully　understand　radiative　heat　transfer　characteristics　and　provide　deep　insight　into　thermal　efficiency,　radiation　energy　is　classified　as　incident　solar　radiation　and　radiative　heat　exchange　in　two　parts.　The　transfer　mechanism,　the　solution　method　and　the　progress　of　the　investigation　for　each　section　are　summarized　and　discussed　in　detail.　Then,　challenges　and　future　directions,　including　an　innovative　design　method,　an　improved　experimental　approach　and　an　effective　simulation　method　are　proposed　to　put　forward　this　receiver　to　be　a　preferred　substitute　in　advanced,　high-temperature　power　cycles.