OBJECTIVE： To improve clean area environmental monitoring standards of Pharmacy intravenous admixture service （PIVAS） in hospital. METHODS： Referring to related national standards and specifications， combined with the work practice， the existing problems of environmental monitoring requirements in Quality Management Standard for Pharmacy Intravenous Admixture to clean area in PIVAS were explored. RESULTS： There was no provision on clean area environmental monitoring standards in Quality Management Standard for Pharmacy Intravenous Admixture； there was no specific numerical value of pressure difference， illumination and wind speed； there was no rule on airborne particles； there was no clear provision on settling microbe and airborne microbe； there was also no rules on the frequence of wind speed and airborne particles monitoring. CONCLUSIONS： Clean area environmental monitoring standards should be separately listed in Quality Management Standard for Pharmacy Intravenous Admixture， and clear provisions are given on detection method， monitoring project， judging standard and monitoring frequency， so that pharmacists are easy to operate and carry out.