Hidden pain in the back of the right waist of men may be caused by lumbar muscle strain, trauma, urinary stones and so on. 1. Lumbar muscle strain: patients due to overwork, prolonged improper posture, etc., resulting in damage to the right lumbar muscles, the patient manifested as recurrent, at the same time will be involved in the back of the waist, through the pain will be radiated to the buttocks. 2. Trauma: If the patient’s right lumbar back side is traumatized, such as bumping, collision, etc., there will be vague pain, which may be accompanied by local bruising, redness and swelling. 3. Urinary stones: when affected by environmental factors, dietary habits, urinary tract obstruction, infection and other factors, some of the components of the solubility is small, when the composition of the change, thus forming the urinary system stones, resulting in the right side of the back of the waist of the male hidden pain. It is recommended that patients go to the hospital in a timely manner, under the diagnosis of the doctor, according to the patient’s specific condition performance, to take targeted treatment.