A urea solution filler pipe device is disclosed. The urea solution filler pipe means includes: a cover supported on a floor of a vehicle body to correspond to a urea solution tank and having a through hole; a filler nozzle body disposed at the bottom of the cover and mounted on the urea solution tank; an opening / closing cap supported on the top of the filler neck body at the top of the through-hole, and selectively opening / closing the through-hole and the filler neck body; and a sealing member supported on the filler neck body in a space formed in the cover and preventing a urea solution leaking from the urea solution tank from flowing into an interior of a vehicle.
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