Reutilization system based on domestic water

The utility model provides a reutilization system based on domestic water, water tank in one or more, its water inlet links to each other with well water pipe, and outlet pipeline and fresh water pipeling link to each other with the water injection pipe of toilet bowl through three solenoid valve, well water pipe passes through pushbutton control solenoid valve gain and loss electricity and links to each other with sewage pipe and drain pipe respectively, the bathing floor drain is received to the drain pipe, the domestic water of basin washes one's face and rinses one's mouth, when domestic water is dirtier, it links to each other the drain pipe to adjust the solenoid valve with the sewage pipe, directly emit into the sewer with it, when domestic water is comparatively clean, it links to each other the drain pipe to adjust the solenoid valve with well water pipe, enter well water tank with comparatively clean domestic water, when central water tank has water, adjustable solenoid valve is preferential through