The invention relates to the technical field of rubbish treatment, and discloses a domestic rubbish treatment system. The domestic rubbish treatment system comprises a dehydrating device, a crushing device, a drying device and a cracking device. A discharge outlet of the dehydrating device is connected with a feed inlet of the cracking device. A feed inlet of the drying device is connected with a discharge outlet of the crushing device. A feed inlet of the cracking device is connected with a discharge outlet of the drying device. The cracking device is provided with a gas outlet, an oil outlet and a discharge outlet. Through the technical scheme, domestic rubbish is converted into energy substances including flammable gas, tar, ash content and the like, and the rubbish is recycled.