Silicon-based　anodes　heavily　depend　on　the　binder　to　preserve　the　unbroken　electrode　structure.　In　the　present　work,　natural　flaxseed　gum　(FG)　is　used　as　a　binder　of　silicon　nanoparticles　(SiNPs)　anode　for　the　first　time.　Owing　to　a　large　number　of　polar　groups　and　a　rich　branched　structure,　this　material　not　only　anchors　tightly　to　the　surface　of　SiNPs　through　bonding　interactions　but　also　formed　a　hydrogen　bonding　network　structure　among　molecules.　As　a　result,　the　FG　binder　can　endow　the　silicon　electrode　with　stable　interfacial　adhesion　and　outstanding　mechanical　properties.　In　addition,　FG　with　a　high　viscosity　facilitates　the　homogeneous　dispersion　of　the　electrode　components.　When　FG　is　used　as　a　binder,　the　cycling　performance　of　the　Si　anode　is　greatly　improved.　After　one　hundred　cycles　at　an　applied　current　density　of　1　A　g-1,　the　electrode　continues　to　display　remarkable　electrochemical　properties　with　a　significant　cyclic　capacity　(2213　mA　h　g-1)　and　initial　Coulombic　efficiency　(ICE)　of　89.7%.　FG　is　used　as　a　silicon-based　anode　binder　for　lithium-ion　batteries　for　the　first　time.　As　FG　possesses　abundant　polar　groups　and　branched　chains,　it　enhances　the　mechanical　properties　of　the　silicon　electrode　and　greatly　improves　the　cycling　stability　of　the　silicon　electrode.　image