Filter pond cover used for restraining algae in filter pond from breeding

A filter pond cover used for restraining algae in a filter pond from breeding relates to the filter pond cover, which solves a problem that the existing water plant needs to clean the algae on a filter pond wall and a drainage channel frequently, so that administration cost of the water plant is increased and normal operation of a water treatment technology is affected. The filter pond cover comprises a sunshade canopy (1), two arc-shaped covers (2), a plurality of supporting rods (3) and a plurality of supports (4). The plurality of supports (4) are arranged on the filter pond in parallel, the plurality of supporting rods (3) are perpendicular to the supports (4), the plurality of supporting rods (3) are arranged on the plurality of supports (4), the sunshade canopy (1) is covered on the plurality of supporting rods (3), the two arc-shaped covers (2) are respectively arranged on two sides of the plurality of supports (4) and inside the sunshade canopy (1), and gaps are arranged between the top edges of the t