Taking X-rays can be harmful to the patient’s body, but the damage is small. Statistically, the harm to patients from taking one X-ray or chest X-ray for routine examination is almost negligible. Some patients think that X-rays have carcinogenic effects, but in fact, their carcinogenic effects may be only one in ten million, so patients should be examined according to medical advice and do not worry about the harm of X-rays to their bodies. However, it is necessary to reduce unnecessary X-ray exposure, such as accompanying patients to take X-ray when they should try to wear protective clothing, avoiding spectators when conducting X-ray examinations, and keeping a distance of at least 2-5m.