Using computers in nursing can benefit the work and result in effective time management. Computer-assisted medical orders' signing on is a technological innovation in my hospital. System theory is the conceptual framework behind this project. The purpose of this project is to evaluate the benefits of medical orders' on-line signing on. Following stepwise data collection, contacting the computer programmer, designing the program and multiple tests, medical orders' on-line signing on is used in every ward. Likert's five-point scale was used to evaluate this project. The results of the evaluation are: (1) head nurses feel time saving averages 1.5 hours per day, and that workers motivation is promoted. (2) nurses feel this kind of medical orders' signing on is more correct and saves time, and they have more time to do the directly nursing work. This project is another computer-assisted nursing innovation following computer-assisted nursing care plan. This project benefits clinical nursing service and improves the validity of orders' signing on.