Objective To explore the application value of hemoglobin,red blood cell distribution width ratio(HRR),neutrophil count/Lymphocyte count(NLR),platelet count/Lymphocyte count(PLR),lymphocyte count/mon-ocyte count(LMR)in predicting the severity of endometriosis(EMs)in abdominal incisions.Methods Medical re-cords of 205 patients with abdominal wall incision EMs admitted to the First Affiliated Hospital of the University of Sci-ence and Technology of China from January 2019 to December 2023 were collected.Referring to the revised R-AFS stag-ing criteria of the American Society for Reproductive Medicine,the study subjects were divided into a mild group(119 cases,lesions ≤3 cm)and a severe group(86 cases,lesions>3 cm)based on lesion size.Using a fully automated blood cell analyzer to detect and calculate HRR,NLR,PLR,LMR.Compare general information and HRR,NLR,PLR,LMR levels,plot receiver operating characteristic(ROC)curves between groups to analyze the application values of HRR,NLR,PLR,and LMR in predicting the severity of EMs in abdominal wall incisions.Results The age,latency,course of disease,lesion size,operation time,blood loss,CA125,NE,NLR and PLR of the severe group were higher than those of the mild group.The proportion of patients with pathological classification of peritoneal type,patch,indwelling drainage tube and color Doppler blood flow was higher than that of the mild group,and the HRR and LMR were lower than that of the mild group(P<0.05).According to the ROC curve,the area under the curve(AUC)of HRR,NLR,PLR,LMR,and the combination of four indicators for predicting severe abdominal wall incision EMs were 0.653(0.611-0.695),0.702(0.661-0.743),0.617(0.572-0.662),0.745(0.704-0.786),and 0.823(0.719-0.927),re-spectively.The application efficiency of the combined evaluation of the four indicators was higher than that of a single in-dicator(P<0.05).Conclusions Both HRR and LMR are lower in EMs for severe abdominal incision,while NLR and PLR are higher in EMs for severe abdominal incision,which can reflect the severity of EMs for severe abdominal incision.