Metallophthalocyanines(MPc)　exhibit,　among　many　useful　properties,　the　ability　to　protect　sensors　against　short,　intense　pulse　deleterious　to　efficient　sensor　operation.　For　the　successful　application　of　this　optical　limiting　property,　an　important　issue　is　the　incorporation　of　MPc　molecules　in　a　matrix　to　fabricate　a　solid　state　system.　We　report　here　the　study　of　different　concentrations　of　Nickle　Tetrasulfophthalocyanine　(NiTSPc)　encapsulated　in　silica　xerogel　matrix　obtained　by　sol-gel　technique.　The　resulted　composites　were　transparent　and　homogeneously　with　appropriate　optical　quality.　The　trapping　effect　was　check　by　the　characteristic　absorption　bands　of　NiTSPc　in　the　UV/Vis　spectra.　The　optical　limiting　properties　of　the　composites　were　measured　at　532nm　with　8ns　pulses.