Natural permeation type excrement solid-liquid separator

The utility model provides a natural permeation type excrement solid-liquid separator which solves the problem that animal excrement cannot be effectively subjected to solid-liquid separation in the prior art. The natural permeation type excrement solid-liquid separator comprises a separation box which is through up and down, a plurality of filter screens which are sequentially arranged are arranged in the separation box, all the filter screens are vertically arranged, a permeation area and an excrement storage area are formed between every two adjacent filter screens, and the permeation areasand the excrement storage areas are distributed at intervals; the upper end of the permeation area is closed, and the lower end is open; the upper end of the excrement storage area is open, and the lower end is a filter screen; after excrement is fed from the upper end of the excrement storage area, water in the excrement permeates into the filter screen, and the rest part of the excrement is left in the excrement storag