The common causes of plantar fasciitis include muscle spasm, plantar fasciitis, lumbar disc herniation, etc. General treatment, physical therapy, medication, surgery, etc. can be used to relieve the symptoms. 1. Muscle spasm: If plantar fasciitis pain appears suddenly, most of them are caused by muscle spasm, which can be relieved by proper rest, straightening the foot, massaging it with correct techniques, and applying hot compresses, etc., which can relax the muscles of the sole of the foot and alleviate the symptoms of spasm. 2. Plantar fasciitis: If the duration of plantar fasciitis is long and not sudden, most of them are caused by plantar fasciitis, on the basis of rest and stretching, it can be combined with heat therapy, infrared ray, shock wave and other physical therapy methods to alleviate the symptoms. If necessary, non-steroidal anti-inflammatory drugs can be taken orally, such as ibuprofen, diclofenac sodium, meloxicam, etc., which can effectively reduce inflammation and relieve pain. 3. Lumbar disc herniation: Lumbar disc herniation will compress the nerves and cause nerve damage, resulting in pain in the innervated area, such as plantar fasciitis. By paying attention to lifestyle habits, avoid sitting for a long time, bending over to carry heavy objects and other activities that are easy to damage the lumbar region, if the symptoms are not relieved, surgical treatment can be carried out to remove the lumbar vertebral pathology, and the symptoms of plantar fasciitis will be gradually relieved. All of the above medications should be used under the guidance of a doctor, avoid self-medication. If the above symptoms occur, it is recommended to go to the hospital in a timely manner for early and regular treatment.