After cardiac stenting, depending on risk factors, LDL cholesterol needs to be controlled below 1.8 mmol/L, and in high-risk patients, below 1.4 mmol/L, to prevent progression of the lesion. Normally, the LDL index is less than 3.12 mmol/L or 120 mg/dl, but for patients after cardiac stenting, it is generally recommended that LDL cholesterol be kept below 1.8 mmol/L and for high-risk patients below 1.4 mmol/L to prevent progression of the lesion. After cardiac stent implantation, patients should follow the doctor’s instructions to standardize the treatment, improve the lifestyle, reasonable diet, pay attention to vigilance is hypercholesterolemia, triglycerides and so on, the index of abnormality or discomfort should be timely consult a doctor. After cardiac stent implantation, LDL may be low or high for a short period of time, but after a period of time, it can basically return to normal, but if it is high or low for a long period of time, it is necessary to consult a doctor and analyze the reasons in a timely manner, and standardize the treatment.