A groove that goes down the middle of the back is usually normal and is medically known as the spinal groove. The spinal groove is the groove formed by the spine and the skin on either side, it is the backbone of our body and is located in the middle of the back, usually the spinal groove is more pronounced in thinner people. If it is concave it also indicates that the spinal groove is deep, indicating that the muscles on either side of the spine are more developed and stable. When the spinal groove appears to be curved, it may be due to scoliosis caused by standing crookedly, sitting improperly, and habitually crossing the legs, etc. Usually, you can target to do some functional exercises. Spine if there is an abnormality, if the combination of discomfort, we should go to the hospital in time to consult the doctor, after clarifying the cause of the disease, according to the doctor’s guidance for standardized treatment.