Aiming　at　the　problems　of　unbalanced　investment　structure　and　insufficient　means　of　resource　allocation　in　distribution　network　investment　allocation,　a　bi-level　allocation　method　for　distribution　network　investment　decision　based　on　multi-indicator　system　and　reward　coefficient　is　proposed.　Considering　the　needs　of　investment　allocation　calculation　and　input-output　efficiency　evaluation,　the　distribution　network　investment　allocation　index　system　and　input-output　index　system　are　constructed　based　on　the　basic　indexes　of　distribution　network　investment　evaluation.　The　index　weights　are　determined　based　on　the　comprehensive　subject-objective　assignment　method　combining　hierarchical　analysis　and　variance　coefficient　method,　and　the　index　scores　are　calculated　using　interval　triangular　fuzzy　affiliation　theory.　The　reward　coefficients　are　introduced　to　further　characterize　the　relationship　between　investment　allocation　and　input-output.　The　relationship　between　investment　allocation　and　input-output　is　further　portrayed　by　the　introduction　of　reward　coefficients,　and　a　bi-level　allocation　model　of　＇province-to-city＇and　＇city-to-county＇distribution　network　investment　decision　is　established　based　on　the　combined　scores　of　the　two.　Finally,　the　results　show　that　the　model　constructed　in　this　paper　can　improve　the　scientificity　of　distribution　network　investment　allocation.　©　2023　IEEE.