Abstract: The article collected various errors in PIVAS of Beijing Friendship Hospital from January 2011 to June 2011, and analyzed the occurrence of the errors according to drug package inserts, Chinese Pharmacopoeia, Clinical Medication Information, Pharmaceutical incompatibility in intravenous infusion and clinical drug consulting system. The external ratio of errors in PIVAS was 0.105‰, and the internal ratio of errors was 1.44‰. The errors occurred mainly were errors of making up prescriptions, dispensing errors and errors of checking finished products. Meanwhile, PIVAS adopted the targeted preventive measures according to the reasons and to cut down the mistakes in order to guarantee safe drug of patients.

Key words: pharmacy intravenous admixture service, analysis of errors, preventive measures