NOVELTY - A biogas fluid drop irrigation fertilizing system comprises biogas fluid sedimentation tanks containing unfiltered biogas fluid original fluid; a filtering device comprising a biogas fluid filter and a water filter; and a drop irrigation device. Precipitated biogas fluid on the bottom of the biogas fluid sedimentation tank is transmitted to the biogas fluid filter, then to the water filter to obtain clear water. The clear water is mixed according to required ratio and then transmitted to the drop irrigation device for drop irrigating the crops.    USE - A biogas fluid drop irrigation fertilizing system.    ADVANTAGE - The system can effectively utilize biogas fluid as organic fluid fertilizer to realize resource utilization of waste and top application of organic crops.    DETAILED DESCRIPTION - A biogas fluid drop irrigation fertilizing system comprises biogas fluid sedimentation tanks, a filtering device and a drop irrigation device. The biogas fluid sedimentation tanks contain unfiltered biogas fluid original fluid. The filtering device comprises a biogas fluid filter and a water filter. The biogas residue in the biogas fluid original fluid precipitates on the bottom of the biogas fluid sedimentation tank. The precipitated biogas fluid is transmitted to the biogas fluid filter via transmission pipe by a water pump. Solid substances are filtered in the biogas fluid, and the filtered biogas fluid is filtered by the water filter to obtain clear water which does not obstruct the drop irrigation device. The clear water is mixed according to required ratio and then transmitted to the drop irrigation device for drop irrigating the crops. An INDEPENDENT CLAIM is included for biogas fluid drop irrigation fertilizing method. The drop irrigation device is agricultural drop irrigation device.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic diagram illustrating the biogas fluid drop irrigation fertilizing system (Drawing includes non-English language text).