Conclusion: PPH plus haemorrhoidectomy is simple, safe, low bleeding, less pain, low complication rate, resume fast, and is the first choice of severe haemorrhoids.

• 结论：PPH结合痔切除术操作简单、安全可靠、出血少、疼痛轻、并发症少、恢复快，是治疗环状混合痔的首选术式。