Oral and intestinal flora for diagnosing primary membranous nephropathy as well as screening method and application of oral and intestinal flora

The invention discloses oral and intestinal flora for diagnosing primary membranous nephropathy as well as a screening method and application of the oral and intestinal flora, and belongs to the technical field of biomedicine. According to the present invention, through the comparative analysis of the oral saliva and the intestinal flora of patients with primary membranous nephropathy and healthy volunteers, 10 oral saliva flora ASVs capable of diagnosing primary membranous nephropathy are screened, specifically, ASV7, ASV118, ASV82, ASV138, ASV125, ASV46, ASV727, ASV368, ASV102 and ASV128, and 11 oral saliva flora ASVs capable of diagnosing primary membranous nephropathy are screened, specifically, the oral saliva flora ASVs can be used for diagnosing primary membranous nephropathy, specifically, the oral saliva flora ASVs can be used for diagnosing primary membranous nephropathy, specifically, the oral saliva flora ASVs can be used for diagnosing primary membranous nephropathy, as a group of oral saliva and