The prescription automatic screening system PASS mainly runs on HIS platforms such as outpatient doctor workstation, resident doctor workstation, nurse workstation and intravenous infusion configuration workstation. In addition, the PASS system also has a self-developed clinical pharmacist workstation, which can provide pharmacists with a working platform for rational drug use monitoring. PASS system uses computer database and other technologies, according to the auditing principles of medicine and pharmacy, taking medical and pharmacy professional knowledge as the standard, and can provide relevant drug information when inputting doctor's orders, and audit the doctor's orders such as drug allergy history, drug interaction, contraindications, side effects and injection compatibility in vitro, so as to help doctors correctly screen drugs and determine doctor's orders, remind and warn in time when problems are found, and reduce the possibility of mistakes. In this way, the PASS system can hand over the rational drug use examination originally completed by medical staff by consulting books or relying on brain memory to the computer system, which can greatly make up for the drug use errors caused by insufficient memory and human error, and at the same time greatly improve the inspection efficiency, making the examination from manual completion to automatic completion, from manual review of a small number of patients' orders to automatic review of all hospital orders, so that almost all patients can benefit from it. Doctor Yamatonokusushi can also learn the latest medical professional knowledge through the comprehensive, scientific and authoritative database information of PASS system, inquire about all kinds of concerned information through the built-in search engine of PASS system, be familiar with the characteristics and usage methods of drugs, and master the skills of guiding patients to use drugs. At the same time, guide patients to use drugs correctly, tell patients the correct method, time and precautions, what to do after missing drugs, and how to deal with adverse reactions. So as to improve the compliance of patients in drug treatment and achieve the best drug treatment effect.

Hospital pharmacy department and management personnel can also analyze and study the rational drug use of all patients in the hospital through the statistical analysis module provided by PASS system, grasp the rational drug use of all departments in the hospital, avoid possible drug use errors and medical disputes in time, and improve the medical quality and drug management level of the hospital.

PASS system has flexible and applicable parameter setting and free combination of functional modules, and can set the required review items, minimum review level, source and priority level of references, floating window display information of drug brief information, etc. According to the needs of hospitals, it provides users in different hospitals, different regions and different academic viewpoints with special needs for rational drug use review and medical information acquisition.