Abstract: Objective To observe and study the use of antiemetic drugs in tumor chemotherapy patients and to provide reference for clinical rational drug use. Methods Two hundred and five tumor patients who received chemotherapy and antiemetic drugs between January and July 2019 in our hospital were selected as subjects to analyze the use of anti-emetic drugs during treatment. Results The irrational use of antiemetic drugs was mainly manifested in the irregular course of medication, improper usage and dosage, unjustified combined medication and super-grade medication. Conclusion The control rate of CINV in a small number of patients with improper use of antiemetic drugs is lower than that of patients with proper use of antiemetic drugs.

Key words: tumor chemotherapy, nausea and vomiting, antemetic, rational drug use