Objective To observe clinical effect of treating erosive oral lichen planus with triamcinolone acetonide combined with herbs for nourishing yin and blood. Methods 58 patients with erosive oral lichen planus were randomly recurited into a control group and a treatment group. The control group was treated with triamcinolone acetonide, and the treatment group was treated with herbs for nourishing yin and blood based on the control group. The therapeutic effects wereobserved in both groups. Results The total effective rate of the treatment group and the control group was 86.2% and 65.5%, respectively. The difference between the two groups is significant (P<0.05) . Conclusion The therapy of triamcinolone acetonide combined with herbs for nourishing yin and blood has better effect in treating patients with chronic gastritis than exclusive western medicine.