Three-step drug analgesia: first step: non-steroidal anti-inflammatory drugs second step: weak opioid analgesics third step: opioid potent analgesics neuropathic pain drug analgesia: anticonvulsants, antidepressants, local anesthetics, glucocorticoids. Other drugs: neurotrophic drugs, anti-rheumatic drugs, anti-migraine drugs, central antimuscarinic drugs, calcium and phosphorus metabolism regulating drugs, traditional Chinese medicine.