Using　agricultural　waste　straw　and　green　plant　seeds　as　the　main　raw　materials,　supplemented　with　a　small　amount　of　starch　surfactant　alkali　and　other　additives,　a　kind　of　environmental　protection　dust　suppressant　for　ecological　restoration　was　developed.　Through　the　evaluation　of　viscosity　permeability　and　other　properties　of　dust　suppressant,　the　optimal　mass　ratio　of　straw,　starch,　surfactant　and　alkali　was　determined　to　be　20:7:2:5.　The　preparation　process　of　dust　suppressant　was　simple,　the　cost　was　low,　and　the　effect　of　wind　erosion　and　rain　resistance　was　significant.　Under　the　condition　of　wind　erosion　at　grade　5,　the　wind　erosion　resistance　rate　was　more　than　99%.　After　moderate　rain　(rainfall　of　20　mm·d-1),　the　shell　sprayed　with　dust　suppressor　was　still　compact,　and　the　shell　thickness　did　not　change.　The　ecological　restoration　effect　of　the　site　sprayed　with　dust　suppresor　was　characterized,　and　the　selected　seeds　in　the　site　grew　luxuriant,　which　indicataed　that　the　restoration　effect　was　significant.　Futhermore,　the　tese　result　of　portable　wind　tunnel　(PISWERL)　showed　that　after　60　days　of　dust-suppressor　spraying,　the　dust　suppression　efficiency　remained　more　than　90%　after　wind　erosion　at　a　wind　speed　of　17.2　m·s-1　©　2022　Science　Press.　All　rights　reserved.