Automatic timing water changing device

The utility model relates to the technical field of automatic water changing devices and solves the problem that a water changing device in the prior art is easy to generate electric leakage faults and electric power waste because of the using of electric appliances. The utility model, particularly, provides an automatic timing water changing device, the device body includes an upper part and a lower part, a starting water discharging barrel and a water feeding barrel are arranged on the support of the upper part of the device body next to each other, a starting water feeding auxiliary barrel is arranged above the water feeding barrel and is provided with a housing, a water discharging barrel and a starting water feeding barrel are arranged at the upper section of the support at the lower part of the device body and are provided with housings, a water inlet pipe connected with a filter is arranged at the lower section, the filter is respectively connected with a four-way pipe and a timing valve via a three-wa