Evolution　of　diverse　Hall　effects　due　to　successive　magnetic　transitions　has　been　observed　in　Mn2.5Fe0.6Sn0.9　by　suitable　chemical　substitution　of　Fe　in　Mn3.1Sn0.9.　This　noncollinear　antiferromagnetic　alloy　exhibits　a　Neel　temperature　of　325　K.　Upon　cooling　from　325　K,　a　magnetic　phase　transition　from　noncollinear　antiferromagnetism　to　ferromagnetism　occurs　at　168　K　due　to　the　tilting　of　magnetization　towards　c　axis.　Above　this　temperature,　anomalous　Hall　resistivity　ranged　from　0.6　to　1.3　mu　omega　cm　has　been　observed　in　noncollinear　antiferromagnetic　state.　Below　this　temperature,　a　topological　Hall　effect　(THE)　starts　to　appear　due　to　the　non-vanishing　scalar　spin　chirality　arising　from　the　noncoplanar　spin　structure.　Further　decreasing　temperature　to　132　K,　another　magnetic　transition　happens,　resulting　in　the　coexistence　of　ferromagnetism　and　antiferromagnetism,　so　that　a　Hall　plateau　with　large　hysteresis　below　70　K　is　yielded.　A　hysteresis　as　high　as　similar　to　80　kOe　is　obtained　in　rho(xy)-H　at　15　K.　However,　the　Hall　plateau　disappears　and　only　anomalous　Hall　effect　(AHE)　persists　when　further　decreasing　the　temperature　to　5　K.　The　present　study　provides　a　picture　of　diverse　magneto-transport　properties　correlated　to　the　variable　spin　structures　driven　by　magnetic　phase　transitions.