Inclusion Criteria:  Participants who understand and sign the informed consent form voluntarily; Age ≥ 18 years old and ≤ 80 years old, regardless of sex; The hospitalized patients with coronary heart disease undergoing PCI; Complete all planned PCI during hospitalization  Exclusion Criteria:  Patients do not receive standardized treatment according to guidelines after being diagnosed with coronary heart disease; Uncontrolled infectious diseases during the screening period; In the screening stage, patients with immune diseases or immune-related diseases such as systemic lupus erythematosus, asthma, inflammatory bowel disease, gout, malignant tumor and so on; Long-term use of non-steroidal anti-inflammatory drugs, hormones, immunomodulatory and chemotherapeutic drugs during the study period; Surgical or interventional treatment was performed within 3 months before the screening period; Pregnant women, lactating women or women of childbearing age who do not use effective contraceptives; Participated in other clinical trials within 3 months before the screening period; The researchers determined that other conditions in which the patient was not suitable to participate in the clinical trial.