Abstract: Objective To discuss the role of pharmacist in clinical treatment of pharmaceutical care by clinical pharmacist for an inpatient with cardiac toxicity caused by ifosfamide.Methods According to the patient condition,clinical pharmacists assisted physicians to develop an effective plan of treatment for the patient. Adverse drug reactions and reasonable measures of pharmaceutical care and health education programs were recorded.Results pharmaceutical care given by clinical pharmacists can improve the effectiveness of medical treatment and reduce the risks caused by drug use.Conclusion Clinical pharmacists involved in clinical drug therapy can assist rational drug use.