Nasal endoscopic surgery is widely used in rhinology clinic because of its minimally invasive efficacy, small tissue damage and fast recovery. In 2002, our department has carried out nasal endoscopic surgery on 2 cases of nasopalatine cysts, and achieved satisfactory results, reported as follows: Example 1, male 50 years old, hospitalized on June 17, 2002 with the discovery of hard palate mass for one year, admission examination: – denture, – gingival erosion, 1.3 * 1.0cm of right anterior portion of the hard palate can be seen in the boundary of the clear surface of the new organisms smooth, medium texture, the pressure of the overflow of pus, no pain, no abnormalities in the bilateral nasal cavity floor. There was no tenderness, and no abnormality was seen in the nasal floor bilaterally. The maxillary CT showed a round bone defect in the right side of the center of the palatal bone, and there were no abnormalities in blood, liver and kidney function tests. Three days after admission, transnasal endoscopic right nasopalatine cyst excision was performed under local anesthesia, and the denture and stump of —- were removed first, which showed that the tip of the —- root had penetrated into the alveolar bone, and the palatine cyst was tightly adhered to the bottom of the right nasal cavity. The cyst wall was surgically peeled along the bone wall, and more purulent secretions were seen in the cyst cavity, and the cyst wall was obviously thickened. Postoperatively, the —– gingival incision was sutured, upper lip pressure bandage was applied and antibiotics were given for five days. Postoperative pathology reported simple cyst with inflammatory granulation tissue in the cyst wall. Case 2: Male, 26 years old, was admitted to the hospital on November 30, 2002, with the chief complaint of “upper lip swelling and pain with toothache for one year”. On examination, the upper lip was obviously swollen and painful, —- pain on percussion, no abnormality in the mucous membrane of the lip and gums, and no abnormality in the right nasal floor. CT coronary sinus showed that the central part of the upper alveolar root was about 2.7*2.1cm in size, with a little bone resorption around the mass of hyperdense shadow. The central root of the upper alveolar bone is occupied. Puncture examination of the mass: a large number of foamy histiocytes and neutrophils did not see malignant tumor cells. Blood routine, liver and kidney function tests were normal. Four days after admission, under local anesthesia, transnasal endoscopic nasopalatine cyst removal was performed. —– lip and gingival mucosal incision was made, the periosteum of the upper alveolar bone was peeled off, and a deep brownish-red cyst was seen in the middle of the upper lip with a fluctuating sensation, and the bone at the lower edge of the right pyriform foramen was partially resorbed, and the dark-red fluid in the cystic cavity was removed in 5 ml. Under the illuminated nasal endoscopic television monitoring system, the cyst wall was peeled off along the edge of the cyst wall of the palatine bone to see that it was adhered with the base of the nose at the anterior superior level. Carefully separated with sharp, see the maxillary nasal ridge partially absorbed, the septal cartilage has been suspended below, the palatal bone bone defect about 3, 5 2. 8 2, 5CM, slightly oval, carefully peeled off the bottom of the cystic wall, complete removal of the cystic wall, see the cyst bone wall is smooth, the trauma to 3% tincture of iodine cauterization. The wound was cauterized with 3% tincture of iodine. The gingival mucosal incision was sutured and the upper lip was bandaged with pressure. Postoperative antibiotics were applied for 5 days. Pathology report: chronic inflammation of the cyst wall tissue, epithelial disappearance with interstitial hemorrhage. Results: 2 patients were followed up for 1 year with good wound healing and no recurrence of the cyst. Discussion, nasopalatine cysts occur in the nose and perinasal soft tissue, bone tissue or bone pores of various congenital cysts, belonging to the facial cleft cysts, such cysts, although initially in the cleft, but after proliferation and expansion or development, often invade the maxillary sinus, the nasal cavity, the maxillary alveolar eminence and the palate, the early stage of the development of cysts due to the slow surface asymptomatic, as soon as the cysts increase in size and reveal deformities, and even secondary infections, the patient only The patient will seek medical attention only when the cyst increases in size and reveals deformity or even secondary infection. In this paper, we report that case 1 occurred in the palate, and case 2 was seen in the alveolar process and the base of the nose. The cysts could be removed completely by endonasal surgery. Nasal endoscopic surgery has the following advantages: 1. Smaller incision and faster wound healing; 2. Because it is operated under the television monitoring system, it can clearly show the cyst boundary for resection and prevent recurrence; 3. Significant reduction of postoperative local swelling, less pain to the patient, and shorter hospitalization time.