Abstract: OBJECTIVE To summarize and analyze the irrational drug orders from Pharmacy Intravenous Admixture Services(PIVAS) in Children's Hospital Affiliated to Zhengzhou University. METHODS Through the pharmacists' review on the medical orders of hospitalized patients, the common irrational drug orders was collected, summarized and analyzed from PIVAS. RESULTS The common irrational drug orders could be divided into improper solvent, improper drug concentrations, improper drug, contraindication in drug-using and input errors of the prescription. CONCLUSION The collation, analysis, and intervention of the common irrational drug orders in PIVAS can not only reduce the error rate of prescriptions, but also greatly improve the safety of patients' medication.