DRAIN TRAP

PROBLEM TO BE SOLVED: To prevent a bowl part of a drain trap from floating up due to buoyancy, improve cleanability of the bowl part, and also effectively prevent drain water from blowing out when arranging the bowl part.SOLUTION: A drain trap comprises: a trap body 1 having seal water in its interior; an inflow entrance 11 configured to be opened to the upper surface of the trap body 1 and making drain water flow into the interior of the trap body 1; a discharge port 12 configured on a side of the trap body 1 for discharging the drain water in the trap body 1 to the outside; a bowl part 2 arranged in the trap body 1 and storing a part of the drain water; and a cylindrical deodorization pipe 3 of which lower part is arranged in the bowl part 2 and which forms seal water in cooperation with the bowl part 2. The drain trap comprises also: a storage part 13 which is formed by making the bottom surface of the trap body 1 indent and in which the bowl part 2 is arranged; and a bearing rib configured on a side of the storage part 13 and bearing the bowl part 2 when the bowl part 2 is arranged.