The plant cultivation device which saves the space particularly in an early raising stage of the leaves, keeping protection of the cultivated leaves not to be drooped down. The plant cultivation device (1) includes a first plate portion (52) formed in a plate shape extending in a transfer direction from the fluid passage member (41) and a second plate portion (53) formed in a plate shape extending in a direction opposite to the transfer direction from the fluid passage member (41). When the distance between the two neighboring fluid passage members (41) becomes large, the second plate portion (53) provided on the preceding fluid passage member (41) and the first plate portion (52) provided on the following fluid passage member (41) are separated from each other with respect to the transfer direction.
