Triglycerides of 3.47 mmol/L are considered high. The normal value of triglycerides is 0.45-1.69 mmol/L. Fasting triglycerides below 1.7 mmol/L are considered appropriate levels, 1.70-2.29 mmol/L are borderline elevated, and ≥2.3 mmol/L are elevated. A triglyceride of 3.47 mmol/L is already diagnostic of hypertriglyceridemia. If the patient is diagnosed with hypertriglyceridemia for the first time and has been in good health, he or she can first be treated by nutritional control, such as low-fat and low-cholesterol diet, increasing regular physical activity, etc. Overweight or obese people should actively lose weight. After three months, if triglycerides are still high, then we can consider initiating drug control therapy. If patients have other underlying diseases, such as coronary heart disease, heart attack, cerebral infarction, hypertension, diabetes mellitus and other chronic diseases, different intensity of interventions will be decided according to risk stratification. Triglyceride-lowering predominant drugs include fibrates (fenofibrate, gemfibrate), niacin (acyclovir), and high-purity fish oil preparations. Specific medications need to be prescribed.