Since the scope of interventional treatment is very wide, there may be many precautions. Precautions for interventional treatment are as follows: 1. Patients with intestinal obstruction, for example, may need to fast; 2. In case of general liver cancer and other interventional treatments, it is necessary to relax before surgery. Interventional treatment is very minimally invasive, so many patients are still a bit worried and cannot sleep the night before surgery, so it is better to communicate with the doctor and apply quiet and tranquilizing drugs in advance; 3. Postoperative fever may be high, and generally the doctor will apply antipyretic drugs according to the specific situation, such as over 38.5℃. If the fever does not exceed 38.5 ℃, drink more warm water; 4, some patients will have constipation, such as 3 days, 2 days still no stool, must communicate with the doctor, report the situation, the doctor will use laxatives according to the situation; 5, if there is a puncture needle eye, the needle eye certainly need to avoid water for a short period of time, such as 3-5 days can not take a shower; 6, postoperative braking problems, because now with technical progress, puncture Afterwards, if you use a closure device, you can get off the ground in 3 hours, and you can move around in bed within 3 hours. If a bandage is used, it is necessary to brake for 12-24 hours, mainly because the patient cannot curl his leg, so there may be pain. Patients are usually given instructions to compress the bleeding point, turn on their side or curl their legs slightly, otherwise it will be very painful.