The present invention provides water culture blocks, which can be stacked in multiple stages along a wall surface, and a water culture device having the same. A water culture block according to the present invention comprises: a block body comprising side plates, which have openings formed therein, and a bottom plate connected to the side plates so as to form a containing space; at least one overflow tube having a hollow portion formed through the bottom plate so as to connect the inside of the block body and the outside thereof; a water-collecting body, which is formed on the upper portion of the block body, and which has a through-hole formed therein so as to provide the containing space with a fluid; and piping connected to the through-hole and coupled to the water-collecting body in order to support the water-collecting body on the bottom plate, wherein the piping has a hollow portion formed to communicate with the through-hole, and an end of the piping, which contacts the bottom plate, has at least one o
