Objective To observe the effect of triamcinolone acetonide in treating hypertrophic scars. Methods Intralesional injection of triamcinolone acetonide was performed on 63 patients with hypertrophic scars.Results 39 cases were cured,18 cases got good effects while 6 cases got no effects.Conclusion Trimcinolone acetonide is effective in treating hypertrophic scars.