You should pay attention to preventing infection, avoiding high-intensity exercise and eating a healthy diet after taking closed injections. 1. Prevent infection: pay attention to keep the injection site clean to prevent infection at the injection site. Especially for joints, it is very important to prevent infection. 2. Avoid high-intensity exercise: After the closure, avoid high-intensity exercise, otherwise it may cause pain at the injection site. At the same time, high-intensity exercise, but also for muscle, soft tissue repeated stimulation, is not conducive to recovery. 3. Healthy diet: after playing closed injection, we should pay attention to light diet, do not eat spicy and stimulating food, which is conducive to the recovery of the condition. After the closed injection, once the injection site appears red, swollen, pain, fever and other symptoms, we should consider that there is an infection, should go to the hospital in time for treatment.