To　quantitativly　evaluate　of　image　restoration　of　optical　sparse　aperture　systems,　a　image　restoration　method　that　uses　single　point　image　as　the　degradation　image　is　presented.　When　this　degradation　image　is　processed　by　appropriate　restoration　algorithm　(with　proper　parameters),　a　distribution　similar　to　Airy　pattern　is　obtained.　By　calculating　the　correlation　coefficient　of　the　restored　image　and　equivalent　filled　system＇s　Airy　pattern,　the　restoration　algorithm　can　be　evaluated.　As　an　example,　image　restoration　and　evaluation　of　SOLARNET　(France　optical　sparse　aperture　system)　are　achieved　to　demonstrate　this　method.　Results　show　that　complicated　image　can　be　restored　as　the　same　resolution　and　image　quality　as　an　equivalent　filled　system＇s,　by　using　the　same　restoration　algorithm　of　the　single　point　image.