Floating transportation type integral steel gate dam for coastal region

The invention discloses a floating transportation type integral steel gate dam for a coastal region. The floating transportation type integral steel gate dam comprises a gate bottom plate, gate piers, a working gate, hydraulic hoists and gate pier top traffic bridges, wherein the gate bottom plate and the gate piers have an empty case type reinforced concrete structure which is integrally prefabricated; the amount of empty cases on the gate bottom plate are multiple; a water filling pipe and an exhaust pipe are formed on each empty case; the hydraulic hoists are installed in the corresponding empty cases of the gate piers; the working gate is a bottom shaft flap gate and arranged between the two gate piers; the working gate, the hydraulic hoists and the gate pier top traffic bridges are installed on the gate bottom plate and the gate piers which are integrally prefabricated to form the integral steel gate dam; and the integral steel gate dam is transported to the field in a floating manner and sunk in place.