OBJECTIVE： To explore the role of clinical pharmacists in the treatment for the patients with hyperthyroidism in pregnancy and starvation ketosis. METHODS： Clinical pharmacists participated in the therapy for a patient with hyperthyroidism in pregnancy and starvation ketosis. According to the patient’s condition， clinical pharmacists assisted the physicians to formulate preliminary therapy plan. During the treatment， the hyperthyroidism of the patient poorly controlled， heart rate was too fast and the liver function injured. Clinical pharmacists suggested the physicians to adjust the dose of propylthiouracil in order to avoid the risk of prenatal development， use propranolol to control the heart rate and reduced glutathione to protect liver， and adjust the parenteral nutrition scheme of the patient. RESULTS： Physicians adopted the suggests of the clinical pharmacists. The hyperthyroidism symptoms of the patient were controlled， and the liver function returned to normal. The patient could be discharged from the hospital with medicines. CONCLUSIONS： Clinical pharmacists provide pharmaceutical care for the patient with hyperthyroidism in pregnancy and starvation ketosis， and participate in the formulation and adjustment of therapy plan so as to ensure the safety and effectiveness of drug use.