Generally normal people in the case of not very frequent, after intercourse will not appear back pain, if in the normal frequency of intercourse under the back pain, may lumbar spine have some underlying diseases, to consider whether there is lumbar muscle strain, there is no disc herniation, there is no inflammation of the lumbar spine, can go to the hospital to do the appropriate examination, identify the cause of timely treatment. If it is in the frequent intercourse under the back pain, that this thing to do too often, must be restrained, to be able to achieve a good relief.