The severity of hypertriglyceridemia induced acute pancreatitis (HTG-AP) is closely related to the serum triglyceride (TG) levels. The higher the TG levels, the greater the risk of developing severe acute pancreatitis (SAP). Previous expert consensus has pointed out that the key to treating HTG-AP is to rapidly lower serum TG levels to below 5.65 mmol/L. Evolocumab is a proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor, which is often used to treat familial hypercholesterolemia, mixed dyslipidemia and atherosclerotic cardiovascular disease. At the same time, evolocumab also has the effect of reducing TG and may provide a feasible option for the management of HTG-AP. However, its efficacy and safety in reducing TG in patients with HTG-AP remain controversial. This study is a multicenter randomized controlled trial to evaluate the efficacy and safety of adding evolocumab to conventional lipid-lowering therapy in patients with HTG-AP.