Drainage anchor for slope drainage reinforcement and drainage system

The utility model provides a drainage anchor for slope drainage reinforcement. Wherein the anchoring section, the drainage free section and the tensioning end are connected in sequence. Wherein the anchoring section comprises a first steel pipe, a grouting hole located in the first steel pipe and a clamping throat used for assembling a rubber film, the rubber film is arranged on the outer wall ofthe grouting hole in a sleeving mode and used for sealing the grouting hole, and the rubber film is filled with cement paste to form a convex structure; the drainage free section comprises a second steel pipe and a plurality of water nail sections which sleeve the outer side of the second steel pipe and are connected in sequence; the tensioning end comprises a third steel pipe and a twisted steelbar positioned at the end part of the third steel pipe; the first steel pipe, the second steel pipe and the third steel pipe are of an integrated structure and are all filled with cement paste. According to the drainage anchor