Water channel water drain and saving device

The invention discloses a water channel water drain and saving device. The device comprises a water storage bucket, a water pipe fixer, a water saving pipe and a water drain pipe, wherein a separating plate is vertically arranged inside the water pipe fixer; the water pipe fixer is divided into a water saving channel and a water drain channel through the water pipe fixer; the water saving channel and the water drain channel rare closed and opened through a water saving plug and a semicircular water drain plug respectively; a water saving pipe matched with the structure of the water saving channel is connected with the water saving channel; the bottom of the water saving pipe is connected with the water storage bucket; a water drain pipe matched with the structure of the water drain channel is connected with the bottom of the water drain channel; pull rings are arranged on the water saving plug and the semicircular water drain plug; a sealing cover matched with the structure of a water separator is arranged on