Depending on the location, such as cerebral angiography, cardiac angiography, and peripheral angiography, the number of days required for hospitalization cannot be generalized. For cardiac angiography alone, the average hospital stay is 3-5 days, with preoperative tests on day 1 and preoperative preparation on day 2. If all preoperative tests are normal, coronary angiography will be performed on day 3, and the patient will be discharged after 1 day of postoperative observation. For cerebral angiography alone, a 24-hour hospital stay is usually sufficient. Patients should be discharged from the hospital for bed rest and observation to avoid bleeding from the puncture site. If the angiogram suggests abnormalities, such as cerebrovascular malformations, aneurysms, or abnormal coronary angiogram results, further testing or surgical treatment is required and the hospital stay will be extended to about 10-15 days. For peripheral angiograms alone, a 24-hour hospital stay is usually sufficient. If the angiogram suggests abnormalities such as aneurysm, arterial occlusion, aortic coarctation or other abnormalities, the angiogram can be treated with concurrent or elective surgery, and the hospital stay will be extended to about 3-7 days. After angiography is performed, patients need to ensure good living and eating habits, keep a calm state of mind and avoid excessive mental stress.