If you have back pain after holding a child, most of it is caused by lumbar muscle strain, and the following treatments should be carried out: 1. Rest as much as possible, avoid bending and holding things, avoid bearing weight on the waist, avoid sitting for a long time and getting cold. 2. External fixation of the lumbar girth can relieve the pressure on the waist when walking and reduce the symptoms of back pain. 3. 4, drug treatment, you can use ointment external, such as Tongluo dispel pain cream or Changchun red medicine paste, you can also take oral pain medication, such as celecoxib, meloxicam, and Chinese medicine, such as lumbago Ning capsule, can play a role in the circulation of the meridians, pain relief. If long-term back pain is not relieved, CT and MRI examinations should be performed to rule out lumbar spine diseases such as lumbar disc herniation, tumor or lumbar spinal stenosis.