Small household garbage treatment device

The utility model discloses a small household garbage treatment device, and belongs to the technical field of garbage treatment equipment. The device mainly comprises a box body, a garbage crushing device, a combustion-supporting device and a power supply device, an ash collecting cavity is formed in the box body, a water pipe is arranged on the ash collecting cavity and connected with an externalwater source, and an annular groove is formed in the upper end of the inner wall of the ash collecting cavity along the side wall of the ash collecting cavity; coarse crushing and fine crushing are conducted on the household garbage through the garbage crushing device, and incomplete combustion of the household garbage, low combustion efficiency and generation of a large amount of toxic and harmful gas caused by poor crushing effect are avoided; an annular groove water through hole is formed in the device, water flow enters an annular groove and then is spirally sprayed out to flush the innerwall of an ash collecting cavity, ash generated after garbage is combusted on the inner wall of the ash collecting cavity is flushed and then discharged through an ash outlet, the combusted ash is prevented from flying in the ash collecting cavity, the spiral water flow has large impact force, and the cleaning effect is good; the biomass pulverizer has the advantages of being good in pulverizingeffect, sufficient in combustion, environmentally friendly and suitable for large-scale popularization.