A total of 200 inpatients or outpatients in the Department of cardiovascular medicine of the third people's Hospital of Mianyang City from April 2021 to October 2021, who met the diagnostic criteria of ish2020 international hypertension practice guidelines, were selected and randomly divided into control group and experimental group, with 100 cases in each group. The control group was treated with amlodipine and the experimental group was treated with levoamlodipine. The changes of blood pressure and serum inflammatory factors were observed before and after treatment.