After tennis elbow is closed, you can usually do simple activities after one day and normal activities after 2~3 days. Tennis elbow can be effectively treated with localized closed injection for pain relief and anti-inflammatory effect. Usually one day after the closed injection, the injection site injection will be absorbed with the body’s metabolism, swelling disappears, at this time you can carry out simple activities. In 2~3 days after the swelling will completely disappear, at this time you can carry out normal activities, but need to pay attention to not excessive activities. When injecting the closed needle, it will cause some damage to the soft tissues of the skin in the affected area, which may cause the patient to have localized edema and so on. Patients should pay attention to avoid premature contact with water at the needle hole after injection, and keep the affected area hygienic to avoid infection at the needle hole, which will affect the treatment effect. After the local closed needle injection, if the affected area continues to be red and swollen and does not go down, it is necessary to consult a doctor in a timely manner.