OBJECTIVE：To standardize and optim ize the clinical use of Trastuzumab for injection ，and to provide reference for rational use of drugs in the patients. METHODS ：The pharmacy intravenous admixture service （PIVAS）in our hospital took the lead in communication and coordination with financial ，information，medical insurance departments as well as clinicians and nurses，to set up dispensing ，charging and reimbursement mode by dose of trastuzumab. Under that ，doctors could give orders according to the clinical dosage of patients ；PIVAS dispenses drugs according to the actual dose ；the drugs were shared among patients；the charge and reimbursement of drugs are carried out according to the actual dose of patients. At the same time ，the questionnaire survey was conducted among 60 patients about the medical experience and cost savings before and after the implementation of the mode . RESULTS ：The questionnaire survey showed that in terms of solving the potential safety problems of trastuzumab and the inconvenience of patients ’medical treatment ，the solution rate of the mode was 100％；in terms of improving patients’feeling of seeking medical treatment and helping treatment ，the improvement rate was 100％；in terms of saving patients ’ treatment costs ，most（80％）of the patients thought that it could save less than 500 yuan each time ，and rest of the patients thought that it could save more than 500 yuan each time. CONCLUSIONS ：The mode of dispensing ，charging and reimbursement of Trastuzumab for injection in our hospital has solved the problems of drug waste ，occupational injury and inconvenient preservation in clinical use ，and has played a good role in drug safety ，cost saving and patient convenience.