Abstract Introduction: Cesarean deliveries are increasing worldwide and now account for one fifth (21%) of all deliveries. This has exceeded the standard for caesarean section operations by WHO by around 5-15%. In Indonesia cesarean delivery rate was 17.6% percent with the highest proportion in DKI Jakarta (31.1%), the lowest in Papua (3.3%). West Sumatra is ranked second highest with a caesarean section rate of 23.8%. Objective: To determine the relationship between age, education, employment, nutritional status, number of ANCs, underlying diseases, and the severity of caesarean section. Method: This research is an observational analytical design with a croseksio area approach. It aims to relate the relationship between age, education, employment, nutritional status, number of ANCs, and underlying diseases, and the severity of caesarean section. Results: This study had 400 research subjects who underwent caesarean section operations, with 16 research subjects experiencing caesarean sections with severe severity, 276 research subjects experiencing moderate severity, and 108 research subjects experiencing mild severity. Using the Chi-Square correlation test, there was significant relationship between a history of ANC and the history of underlying disease on the severity of caesarean section. There was no significant relationship between age, education, employment, or nutritional status on the severity of caesarean section. Conclusion: There was significant relationship between history of ANC and history of underlying disease on the severity of caesarean section. Keywords: Determinant Factors, Cesarean section, Level severity, INA-CBGs