Back pain from excessive intercourse may be a normal occurrence. Excessive strenuous exercise leads to pain caused by vasodilation of the lumbar region or pain caused by contusion of the lumbar region due to improper body position, proper rest is sufficient and no special treatment is needed. In addition, it may also be caused by lumbar muscle strain, inflammation and other reasons: 1. Lumbar muscle strain: too much intercourse may lead to the emergence of lumbar muscle strain, patients can feel the waist or lumbosacral distension, soreness, lumbar pain after intercourse aggravated, can be reduced after rest. Daily need to strengthen the lumbar back muscle exercise, avoid overwork, correct bad position, and pay attention to the movement and strength when having intercourse. Lumbar muscle strain can not heal itself for a long time can use some physical therapy, massage and other ways to relieve pain and promote recovery. Severe cases can also use procaine plus prednisolone acetate or hydrocortisone acetate to do closed treatment, and combined with infrared, ultrasound and other physical therapy to relieve pain, if necessary, you can follow medical advice to use anti-inflammatory painkillers, injections of corticosteroids and oral non-steroidal anti-inflammatory drugs; 2, inflammation: pelvic inflammatory disease and prostatitis patients, frequent intercourse, the inflammatory response aggravated, can lead to patients with back pain. After going to the hospital to check and confirm the diagnosis, you can follow the medical advice to use antibacterial drugs such as levofloxacin, non-steroidal anti-inflammatory drugs such as ibuprofen for drug treatment, and for the original disease. Avoid having sex too often in daily life, take more rest and do physical activities properly. Pay attention to lumbar warmth and avoid weight-bearing on the lumbar region to avoid aggravating local pain. If abnormalities occur, go to the hospital for treatment in a timely manner.