The invention provides an automatic uninterrupted reclaimed-water treatment system. The system comprises a treatment device and a control device, wherein the treatment device comprises at least two water treatment units; the water treatment units are used for filtering a received reclaimed-water source; and the control device comprises two ways of water supply systems, one way is used to completefiltration operation, the other way is used to complete cleaning operation, and the control device circularly controls the working conditions of the units in the two ways of water supply systems according to a pre-configured startup scheme, so that the entire treatment system continuously operates without interruption. The automatic uninterrupted reclaimed-water treatment system provided by the invention not only realizes the requirement of water consumption in different water use places through an combined application of the units, but also satisfies the requirements under working conditionsof low water resistance and large-flow all-pass filtration; and through pre-configuration, the system circularly works without interruption, shutdown cleaning in the middle process is not needed, a water pump can be instructed to be partially or completely unloaded, and the requirements for normal use are not affected while energy sources are saved.