A plastic board drain containing an oval shaped core is provided to increase discharge capacity of the plastic board drain by maintaining proper distance not to be clogged by a filter jacket surrounding the core. A plastic board drain(10) has a core(20) which drains water from soil through paths(23) in the core and a filter jacket(25) which surrounds the core to prevent foreign materials from entering the core. Dividers(22) having different width are symmetrically placed to shape an oval.
