Abstract: OBJECTIVE To investigate the peri-chemotherapy pharmaceutical monitoring on cancer patients taken by clinical pharmacists. METHODS To expatiate the clinical pharmacists take peri-chemotherapy pharmaceutical monitoring on cancer patients by summarizing and organizing the sequence of administration, drug pretreatment, drug lucifugal infusion, dose adjustment, toxicities and measures. RESULTS Using the peri-chemotherapy pharmaceutical monitoring, clinical pharmacists could take the whole management of the treatment for cancer patients, reduced the toxicity and improved the compliance of patients. CONCLUSION Peri-chemotherapy monitoring is a good point for clinical pharmacists to involve in patients' treatment which can provide individualized treatment to clinic and patients, thus clinical pharmacists can play a positive role in the threatment of caner patients.