To　address　the　high　temperature　rutting　resistance　and　performance　improvement　of　waste　cooking　oil　(WCO)　based　bio-asphalt,　the　organic　montmorillonite　(OMMT)　was　selected　as　the　compound　modifier　to　improve　the　high　temperature　performance　of　bio-asphalt.　The　multiple　stress　creep　recovery　test　was　utilized　to　quantify　the　influence　of　bio-oil　and　OMMT　content　as　well　as　aging　level　on　the　non-recoverable　creep　compliance　(Jnr),　aging　sensitivity　and　stress　sensitivity　of　various　asphalt　binders.　Viscoelastic　rheological　parameters　of　the　tested　binders　were　also　fitted　from　the　four　coefficients　Burgers　model.　Test　and　analysis　results　show　that　the　addition　of　WCO　based　bio-oil　significantly　reduces　the　high　temperature　rutting　resistance　of　petroleum　asphalt　under　various　aging　conditions.　The　further　compound　Bio/OMMT　modification　can　reach　the　similar　rutting　resistance　level　of　petroleum　asphalt,　in　which　the　performance　improvement　is　still　effective　after　the　short-term　and　long-term　aging.　The　aging　sensitivity　of　the　bio-asphalt　slightly　increases　when　compared　to　the　petroleum　asphalt.　Further,　compound　OMMT　modification　into　bio-asphalt　also　shows　an　overall　increasing　trend　of　the　aging　sensitivity.　The　effect　of　bio-oil　on　the　binder　stress　sensitivity　at　high　temperature　is　much　lower　than　that　of　the　OMMT　content　and　aging　effect,　and　the　use　of　high　OMMT　content　should　be　limited　from　the　stress　sensitivity　requirement.　Additionally,　the　fitting　results　of　four　coefficients　Burgers　model　show　that　the　use　of　bio-oil　modification　decreases　the　proportion　of　elasticity　and　delayed　elasticity　in　creep　compliance　but　increases　the　viscous　part.　Meanwhile,　the　further　OMMT　compound　modification　displays　the　completely　opposite　impact　on　the　creep　compliance　proportion　of　the　bio-asphalt.　©　2022,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.