The invention discloses a rural labor-saving and time-saving simple rapid composting method, which comprises the following steps: selecting a composting position, digging a ventilation ditch, erecting a supporting structure, laying a bottom mat, crushing waste, mixing crushed materials, adding water and urea, stacking mixed materials, covering with a transparent agricultural film and turning and moisturizing; S1, selecting the composting position, namely selecting the composting position by utilizing a temperature and humidity detection instrument, and selecting a proper position as a composting place; S2, digging the ventilation ditch, namely digging the ventilation ditch with a proper size by utilizing a tool, and ensuring that the ditch spacing of the ventilation ditch is 0.3-0.4 m; and S3, erecting the supporting structure, namely raising the upper part of the ditch by utilizing a stick or a branch, and forming the structure for supporting by utilizing the stick or the branch. Compared with the prior art, the method has the beneficial effects that an independent oxygen supply mode can be formed by forming the ventilation ditch below the composting body, the contact area of materials and oxygen can be increased, frequent composting body turning and oxygenation on the composting body are avoided, labor and time are saved, the composting efficiency is improved, and the composting cost is reduced.