PURPOSE: A water storage and drain plate for cultivating plants, with a maximized space unit is provided to store massive amount of water or rain water passed through soil. CONSTITUTION: A water storage and drain plate for cultivating plants includes a first section(K1) as a basic unit. The first section comprises the following: plural supporting pillars(20) installed in the inside of an edge unit(70); a space unit(10) for storing water, formed among the plural supporting pillars; and a through-hole(20e) for draining, and a groove(d) for a water way installed on the plural supporting pillars.
