"Based on literature reviews, 70% of the unexpected in-hospital cardiac arrests (referred to as IHCA hereunder) presents some symptoms 6 to 8 hours before the time of cardiac arrest. The Automatic Early Warning System created and developed by the Hospital can detect the illness exacerbation early for in-time treatments supported by the health care workers to reduce the first aid requirements and the mortality of hospitalized patients. The system construction adopts the patient-oriented design on the improvement of system integrity, feasibility, compliance rate and other dimensions to achieve the interaction and feedbacks between human and system. The innovative polices are to introduce the complete National Early Warning System (NEWS) to the Hospital, to configure the warning signal for the one with the highest score which is 7 scores in total and higher than the scores in previous 3 times based on the NEWS indication, to support the continuous reminders in the Physician Management, Illness Progress Record and Hospitalization systems with indicators, to highlight the name of high-risk patients in the Clinic Nursing System, to provide the dynamic board of early warning system dedicated for wards, to design the screen savers of early warning system and to construct the warning monitoring team with the emergency and critical care physicians. The system successfully improve the 13 indicators, including the average monthly IHCA people, frequency and occurrence rate of hospitalized adults, the IHCA frequency and occurrence rate since 24:01 to 08:00, the IHCA frequency and occurrence rate since 12:01 on Saturday to 08:00 on Monday, the survival and discharge rates for IHCA patients which are recorded with Ventricular Fibrillation (VF) or Ventricular Tachycardia (VT) in the their first heart rate records, the survival rate 48 hours for patients after IHCA, the survival and discharge rates for IHCA patients, discharged rate of survival patients 48 hours after IHCA and the in