Non-toxic　rare　earth(RE)composite　materials　are　promising　and　active　in　optoelectronic　fields,such　as　pigment.In　this　work,Na　ions　doped　γ-Ce2S3　pigments　were　synthesized　by　solid-phase　vulcanization　and　followed　by　in-situ　synthesis　to　prepare　an　outer　layer　of　CePO4　film.The　characterizations　of　X-ray　diffraction(XRD),scanning　electron　microscopy(SEM),transmission　electron　microscopy(TEM),X-ray　photoelectron　spectroscopy(XPS),solid　state　nuclear　magnetic　resonance(NMR)indicate　that　Na-dopedγ-Ce2S3　and　CePO4　uniformly　and　tightly　coated　core-shell　structure　was　successfully　synthesized.The　thermogravimetric　analysis(TG)and　reflection　spectrum(RS)reveal　that　the　CePO4　coating　significantly　improves　the　colorant　and　thermal　stability　performance　of　γ-Ce2S3.The　excellent　color　quality　of　γ-Ce2S3@CePO4(L*=45.16,a*=55.94,b*=44.53)is　achieved　and　the　red　color(L*=43.82,a*=49.79,b*=38.04)is　still　retained　even　if　the　sample　is　heated　in　air　at　400℃for　30　min.