If the back pain after cesarean section is a non-inflammatory factor, you can use hot compresses with salt bags, if it is an inflammatory factor, then hot compresses are not recommended. It is also important to note that hot compresses with salt bags do not have an additional therapeutic effect. Postpartum back pain is mostly considered to be whether it is caused by the lumbar spine after anesthesia, and may also be caused by the waist cold, bacterial infection leading to pelvic inflammatory disease and other factors. 1. If it is caused by postpartum cold or lumbar muscle strain, then hot compresses with salt bags can promote blood circulation and help relieve and reduce pain. 2. If it is caused by lumbar anesthesia, then it may be caused by local nerve and muscle damage, and hot compresses may not have a significant effect. 3. If the pelvic inflammatory disease is caused by bacterial infection, hot compresses may also aggravate the symptoms, so hot compresses are not recommended. If there are abnormal symptoms after delivery, it is recommended to consult a doctor in time.