To observe the effect of calcium alginate dressing on nasal tampon during nasal operation. Methods Group A: To make anterior nares packing the first choice, followed by posterior nares packing. When neither therapy works out, a related artery ligation operation is needed. 目的:为观察藻酸钙敷料填塞手术鼻腔的治疗效果。方法A组:首选前鼻孔填塞,其次是后鼻孔填塞和相关动脉结扎术。