The main objectives of this study were: to provide a computerized program for Patients with Cesare an Sec tion in predicting lengths of stay, and to evaluate the model of Automated Critical Pathway in Hospital information System. ; The Results of this study had shown the accessibility to the development of Automated Critical Pathway and can be contributed to aid developing the Automated Critical Pathway for other DRGs. The application of developed Automated Critical Pathway in clinical areas will induce easiness for the users and the substantial effect.