The utility model discloses a flood discharge atomizing zone highway hangar tunnel protective structure relates to road engineering technical field, and the current highway that passes flood dischargeatomizing zone of solution is when the flood discharge, and flood discharge atomizing rainfall is erodeed highway basis and structure, and the problem of safely current condition is unsatisfied withto the highway. The utility model provides a road surface of highway is close to side slope one side interval and sets up the stand, and one side is close to the river and sets up the river -side sidewall vertically in addition, and the top and the stand top of river -side side wall are passed through the roof and is linked to each other, formation fully enclosed hangar tunnel structure, the topsurface of roof is the slope form to slant river -side side wall sets up to the interval trompil on the river -side side wall, trompil department is sealed through the plane skylight, and the outsideof plane skylight sets up the protection network. The utility model is simple and reasonable in structure, construction convenience transforms present highway according to this, can improve the traffic operation condition guaranteeing that highway basis and highway structure are not influenced by the flood discharge, simplifies flood discharge traffic organization and management simultaneously.