In　the　traditional　business　model,　retailers　primarily　are　responsible　for　selling　the　manufacturer′s　national　brand.　However,　in　recent　years,　the　retailers　have　been　trying　to　break　away　from　the　traditional　business　model　and　find　new　profit　growth　by　creating　their　store　brands,　which　impacts　the　manufacturer′　s　national　brand.　Therefore,　how　the　manufacturer　should　deal　with　the　competition,　or　even　prevent　the　retailer　from　creating　a　store　brand,　has　become　an　issue　that　needs　to　be　addressed.　According　to　the　Triple　Bottom　Line　Theory,　companies　should　concern　the　criteria　from　economy,　society　and　environment　aspects,　thus　green　manufacturing　has　received　widespread　attention　from　academia　and　the　business　community.　In　addition,　as　consumers　pay　more　attention　to　corporate　social　responsibility　(CSR)　issues,　more　and　more　companies　have　begun　to　implement　CSR,　which　has　induced　non-negligible　impacts　on　upstream　and　downstream　enterprises　through　the　supply　chain　cooperation.　Therefore,　we　aim　to　explore　whether　the　manufacturer　can　deal　with　the　retailer′s　store　brand　competition　by　implementing　CSR　behavior.　In　this　context,　the　study　on　the　impacts　of　a　manufacturer′s　CSR　behavior　on　a　retailer′s　store　brand　strategies　in　a　green　supply　chain　is　of　great　practical　significance.　In　this　paper,　a　two-echelon　green　supply　chain　consisting　of　a　single　manufacturer　and　a　single　retailer　is　proposed　to　explore　the　impacts　of　manufacturer′s　CSR　behavior　on　retailer′s　different　store　brand　strategies　(i.　e.,　traditional　manufacturing　strategy　and　green　manufacturing　strategy)　through　game　theory.　The　specific　research　processes　and　the　conclusions　are　shown　as　follows:　First,　we　obtain　an　equilibrium　solution　through　the　Stackelberg　Game　(where　the　manufacturer　is　the　leader　and　the　retailer　is　the　follower).　With　the　equilibrium　solution　analyzed,　the　results　show　that:　(1)The　higher　the　manufacturer′s　CSR　level　is,　the　higher　the　greenness　and　market　demand　of　national　brand　revealed,　and　the　lower　the　greenness　and　market　demand　of　store　brand　is;　(2)As　the　manufacturer′s　CSR　level　increases,　the　profits　of　the　retailer　and　the　green　supply　chain　system　improve,　and　it　does　not　necessarily　decrease　manufacturer′s　profits　when　the　retailer　adopts　green　manufacturing　strategy;　(3)　The　retailer′s　store　brand　strategies　hurt　the　manufacturer′s　profits　and　even　hurt　the　green　supply　chain　system′s　profits　by　reducing　the　market　demand;　(4)No　matter　what　kind　of　store　brand　strategies　the　retailer　adopts,　the　manufacturer　can　prevent　the　retailer　from　creating　a　store　brand　through　implementing　a　higher　level　of　CSR　behavior.　Under　certain　conditions,　the　manufacturer′s　actions　to　prevent　the　retailer　from　creating　a　store　brand　can　improve　its　profits　and　achieve　a　win-win　situation　for　channel　members.　However,　compared　to　the　traditional　manufacturing　strategy,　if　the　retailer　adopts　the　green　manufacturing　strategy,　the　manufacturer　has　to　implement　a　higher　level　of　CSR　behavior　to　prevent　the　retailer　from　creating　a　store　brand.　Second,　we　extend　the　study　to　the　impact　of　the　manufacturer′s　CSR　behavior　on　the　retailer′s　store　brand　strategies　where　the　manufacturer　is　the　leader　of　the　green　supply　chain.　The　results　show　that:　compared　to　the　situation　where　the　retailer　is　the　leader　of　the　green　supply　chain,　if　the　manufacturer　is　the　leader,　then　the　manufacturer′s　more　substantial　channel　power　will　make　it　necessary　to　implement　a　higher　level　of　CSR　behavior　to　prevent　the　retailer　from　creating　a　store　brand,　which　makes　it　more　difficult　for　the　manufacturer　to　prevent　the　retailer　from　creating　a　store　brand.　Finally,　we　explore　the　situation　that　the　manufacturer　cannot　adjust　green　R&D　investment　to　deal　with　the　retailer′s　store　brand　competition.　The　results　show　that　when　the　retailer　creates　a　store　brand　and　manufacturer　is　unable　to　adjust　its　green　R&D　investment　in　time,　the　manufacturer　needs　to　implement　a　higher　level　of　CSR　behavior　to　s　prevent　the　retailer　from　creating　a　store　brand.　This　article　systematically　explores　the　impact　of　a　manufacturer′s　CSR　behavior　on　a　retailer′s　store　brand　strategies　in　the　context　of　the　green　supply　chain.　It　provides　a　reference　for　how　the　manufacturer　deals　with　the　competition　of　the　retailer′s　store　brand　©　2023,　Journal　of　Industrial　Engineering　and　Engineering　Management.All　Rights　Reserved.