Medication Errors, means the errors which occur during the whole process from prescribing by doctors, filling prescriptions by dispensers, and medicating by nursing staff or taking medicine by patients. It includes negligence and judgments errors in the whole process. The main reasons are lack of communications in medical groups, unclearly handing over between shifts, blurred orders, and different recognition to abbreviation...etc. Even so, concerning injections and IV are still with oral orders which leads nursing staff using the wrong medicine, dosage and dilution concentrations...etc. easily. Therefore, this study is going to build the database of injection orders and structure IV orders to avoid not able to screen unstructured written orders leading into negligence of nursing staff due to insufficient communications or blurred orders, reduce medication negligence, promote the qualities of medical care. Furthermore, it is able to keep missed accounts off, save time on overlapped manual input, forward efficiency.