Introduction : Multiple surgical methods have been reported to cover the skin defect due to resection of the large mucous cyst. However, there were some disadvantages in those procedure because of need of skin graft, bukiness and different skin texture. In this report, the new procedure using the dorsolateral flap is introduced. Material & Method : This flap is designed with the "tear-drop" shape from the lateral side to the dorsum of the finger and elevated maintaining the digital neurovascular bundle in the distal and proximal sites to the flap. The skin defect after resection of the mucous cyst is covered by advancement of the dorsolateral flap. The donor site is closed directly by the technique of V-Y closure. Clinical trials : This procedure was performed in 18 clinical cases with good results. Skin graft is not necessary for closure of the donor site and the skin defect is reconstructed with the same quality as before surgery. Discussion : There are some advantages with this procedure. The technique of elevation of the flap is easy. Skin grafting of the donor defect is not necessary. Therefore, the operation time is shorter than with the conventional method. The lack of need for a skin graft gives an aesthetic result with the same skin texture. The ROM of the DIP joint is limited minimally and it does not produce postoperative nail deformity. Sensation of the dorsum of the DIP joint is not changed. On the other hand, this method has shown no disadvantages. Conclusion : The "tear-drop" shaped dorsolateral finger flap is an easy but reliable procedure and gives excellent results for coverage after resection of a large mucous cyst. This procedure should be considered for coverage of the dorsal skin defect of the finger, especially near the distal phalanx.