Whether a protruding tailbone is normal or not cannot be generalized, but needs to be determined by the cause of the protrusion. If it is caused by physiological and genetic factors, most of them do not need treatment. If it is caused by fracture, osteophyte or other factors, we should consult the doctor in time to find out the cause of the disease and carry out targeted treatment. 1. Physiological factors: If the patient is thin and the subcutaneous fat is relatively thin, when bending over or touching the tailbone, it will appear to be more protruding, and generally do not need treatment. 2. Genetic or developmental factors: If the tailbone protrudes during childhood and the protrusion is within the normal range, it is considered as a genetic or developmental problem, which is a normal phenomenon and generally does not require treatment. 3. Tailbone fracture: due to the patient’s experience of falling on the tailbone, a fracture occurs at the tailbone, and the bone is obviously misaligned but not reset. Generally, it is necessary to carry out imaging examination, and according to the size of the displacement, to determine whether it is necessary to carry out reset. 4. Bone proliferation: with age or long-term poor sitting posture, the tailbone bones will proliferate, degeneration, aging, will lead to tailbone protrusion. If there are no symptoms, there is no need to deal with it. If there are symptoms, you can first take local physical therapy and oral non-steroidal drugs to treat it, and then undergo surgical treatment if it is serious. Tailbone protrusion may also be caused by other factors, such as bone tumors, etc. It is recommended that the patient consult a doctor in time to clarify the cause of the disease, to exclude physiological factors, and then according to the cause of the targeted treatment.