The invention belongs to the field of traditional Chinese medicine, and particularly relates to a new use of Pien Tze Huang and its preparation in the medicine for treating postherpetic neuralgia. The results of clinical studies show that Pien Tze Huang has a significant effect on the treatment of postherpetic neuralgia, and the improvement of the patient's syndrome is comparable to that of pregabalin, and the degree of relief of neuropathic pain is significantly better than that of pregabalin； High safety, suitable for clinical application.本發明屬於中藥領域，具體涉及片仔癀及其製劑在治療帶狀皰疹後遺神經痛的药物中的新用途。臨床研究結果顯示，片仔癀對帶狀皰疹後遺神經痛的治療效果顯著，對於患者綜合症狀的改善程度與普瑞巴林相當，且對於患者神經痛的緩解程度顯著優於普瑞巴林；此外，其安全性高，適合於臨床推廣應用。
