Concrete construction device for sealing bottoms of underwater steel-jacketed cases

The utility model discloses a concrete construction device for sealing bottoms of underwater steel-jacketed cases, which comprises a guide pipe. The guide pipe is used for injecting pouring concrete, and a glass layer which is used for sealing an orifice of the guide pipe is disposed at the bottom end of the guide pipe. During construction, the glass layer prevents water from entering the guide pipe, and concrete breaks through glass after entering the guide pipe and enters the bottom of a steel-jacketed case. The glass seals the bottom orifice of the guide pipe to be submersed in water or the bottom sealing concrete and prevents water from entering the guide pipe, when poured via the guide pipe, concrete is effectively prevented from flowing to bottoms of adjacent guide pipes to block the bottoms of the other guide pipes, and the problem that water is accumulated in the guide pipe and concrete cannot continue being poured within the range is solved. The concrete construction device adopting the construction