Objective: To study the expression of TNF\|α and CD68 in nasal polyps tissue and their significance. Methods. Paraffin sections of 19 nasal polyps and 8 chronic rhinitis samples were studied with immunohistochemical technique. Results. The expression of TNF\|α were stronger in nasal polyps tissues than that in controls. Numerous CD68 positive cells were found in epithelium laryer and in the lamina propria of nasal polyps. There were positive relationship between the expression of TNF\|α and that of CD68(r=0.615). Conclusion. It was suggested that activized macrophage as antigen\|presenting cell in the development of nasal polyps, may play a important role through upregulated TNF\|α′s synthesis and secretion.