A Trial to Evaluate the Efficacy and Safety of SHR-1918 in Patients With Hyperlipidemia

Inclusion Criteria: 1. the age must be at least 18 years old, and both men and women are eligible; 2. the patient was receiving a stable dose of statins at the time of screening,, and the fasting LDL-C met: For individuals with extremely high risk of ASCVD, LDL-C≥1.4 mmol/L; for those with very high risk of ASCVD, LDL-C≥1.8 mmol/L; and for those with medium and high risk of ASCVD, ≥2.6 mol/L; 3. Fasting TG≥ 1.7 mmol/L; 4. Understand the research procedures and methods, voluntarily participate in this trial and sign the informed consent form in person. Exclusion Criteria: 1. poorly controlled hypertension (systolic blood pressure ≥160 mmHg and/or diastolic blood pressure ≥100 mmHg) at the time of screening or before randomization; 2. Alanine aminotransferase (ALT) or aspartate aminotransferase (AST) or γ -glutamyl transferase (GGT) \> 3× upper limit of normal (ULN), or total bilirubin \> 2×ULN; 3. Thyroid stimulating hormone (TSH) is lower than the lower limit of normal (LLN) or greater than 1.5×ULN； 4. The estimated glomerular filtration rate (eGFR) is less than 30 mL/min/1.73m\^2; 5. Previously suffering from diseases that have a significant impact on blood lipid levels, such as nephrotic syndrome, severe liver diseases, Cushing's syndrome, etc.