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Objective Improving the traditional Tennsion method to explore more reasonable repair method for unilateral cleft lip.Methods 37 cases were operated to reconstruct the ala nasi and upper lip philtrum ridge form with rotatory alae nasi triangle flap plus improved Tennsion method, and compared the operational results with that of traditional Tennsion method.Results The improved Tennison method acquired a more beautiful nose and upper lip, it rehabilitated the ala nasi and restored the physiological function of the orbiculars muscle.Conclusion Improved Tennsion method wins an essentially satisfactory operational result of unilateral cleft lip.