Domestic wastewater treatment device

The utility model belongs to the technical field, and particularly relates to a domestic wastewater treatment device which comprises a filtering structure, the filtering structure comprises a water passing tank, and a first motor supporting seat is fixedly mounted at the bottom of the water passing tank. Through the filtering structure, when waste water passes through the water passing tank, impurities in the waste water can be filtered through a coarse-hole leakage net, a fine-hole leakage net and a micro-hole leakage net in the water passing tank, a first motor is started after the waste water passes through the water passing tank, and the first motor can enable a first motor shaft to rotate so as to enable a first limiting disc to rotate; a first limiting disc rotates to enable a belt to rotate, the belt rotates to drive a second connecting rod and a first connecting rod to be separated, the second connecting rod and the first connecting rod are separated, finally, a second connecting plate and a first con