Plantar pain after running can be caused by improper running, plantar fasciitis, etc. It can be relieved by resting, applying ice locally, and taking oral medication such as diclofenac sodium. 1. Improper running: lack of targeted ankle training, no warm-up before running, incorrect posture when running, running distance is too long, running speed is too fast, etc., will lead to changes in the plantar force, resulting in localized strain, and the symptoms of pain in the soles of the feet after running. You can relieve the pain by resting in bed, applying ice packs locally, wearing soft-soled sports shoes and massaging your feet after running. 2. Plantar fasciitis: aseptic inflammation, mostly caused by long-term walking or standing, heel bone and plantar fascia repeated friction injury, with plantar pain as the main symptom. The symptoms can be relieved by oral non-steroidal anti-inflammatory drugs such as diclofenac sodium, which can cause epigastric pain, nausea, vomiting, diarrhea and other gastrointestinal symptoms, allergic to the product, patients with severe heart failure is prohibited. After running on the soles of the feet, and a long time can not be relieved, it is recommended to consult a doctor in a timely manner, do not self-medication, so as not to cause adverse reactions.