Objective: To analyze the quality control methods and measures for precise dosage dispensing of non-whole injection drugs in pharmacy intravenous admixture services (PIVAS) of children's hospital, so as to provide safe and precise intravenous infusion for clinical departments and to ensure the safety of children infusion. Methods: Data on the usage of 166 kinds of commonly used injectable drugs in PIVAS from August to December, 2020, were collected to analyze the rationality of precise dose allocation of commonly used injectable drugs (dosage form, specifications, dilution requirements, solubility, etc.) in non-whole injection and medication for children. Results: In 166 commonly used injections, the precise dosage of non-whole injection drugs (non-whole solution injection, non-whole aseptic powder for injection, non-whole bag of large infusion drugs) should meet the requirements of rationality of children's medication, and relevant regulations should be formed to ensure the dosage. Conclusion: By establishing the quality control standard for non-whole injection drugs, formulating the "dispensing rules" and standardizing the operation, the precision of the dispensing of finished products by PIVAS can be improved, so as to ensure the safety and rationality of drug usage in children.