OBJECTIVE： To investigate the role of clinical pharmacists on parenteral nutrition support for liver cirrhosis patients with gastrointestinal bleeding. METHODS： Clinical pharmacists participated in parenteral nutrition support consultation for a liver cirrhosis patient with gastrointestinal bleeding. Based on etiology， liver function， complications and the effects of drugs on liver function， through two consultation， it was suggested to no longer add insulin into the patient’s nutrient solution， adjust 20％ Fat emulsion injection（C14-24）250 mL to 20％ Medium-chain and long-chain fat emulsion injection （C8-24） 250 mL， adjust Compound amino acid injection（18AA-Ⅴ）350 mL to 6 Amino acid injection（6AA）350 mL， adjust Calcium gluconate injection 1.0 g to 0.7g. Sodium glycerophosphate injection 10 mL and Alanyl glutamine for injection 10 g were added， decreasing dripping speed from 2 mL/min to 1.5 mL/min， increase Glucose injection （100 mL ∶ 50 g） from 300 mL to 350 mL. Blood glucose was also detected. RESULTS： Physicians adopted the suggestion of clinical pharmacists. The patient’s condition and blood glucose control would keep stable till gastrointestinal bleeding was controlled， the diet returned to normal and none of above symptoms occurred again. CONCLUSIONS： The participation of clinical nutrition pharmacists in pharmaceutical care as parenteral nutrition support plays active role on the improvement of patients’ nutritive condition and clinical prognosis improvement.