Pig farm manure fermentation treatment and utilization system

The utility model discloses a pig farm manure fermentation treatment and utilization system which comprises a manure pit, the manure pit is connected with a dry-wet separation pool through a connecting pipe, a stirring device is arranged in the dry-wet separation pool, and the dry-wet separation pool is respectively connected with a solid manure pool and a first sedimentation pool. The first sedimentation tank is connected with a biogas fermentation tank through a connecting pipe, the biogas fermentation tank is connected with a second sedimentation tank through a connecting pipe, and a plurality of partition plates which are distributed at equal intervals are sequentially arranged in the second sedimentation tank from top to bottom. The device is economical, practical, green and ecological, has high popularization value, is beneficial to solving the problem of secondary pollution caused by the fact that the biogas slurry is not fully utilized, further improves the ecological breeding efficiency, is rich in v