Abstract: Abstract：Objective To investiage the clinical effect of micro-dissection needle in treating cyst of epiglottis. Methods The study included 86 cases received surgical treatment in our hospital from January 2014 to July 2017. Fifteen cases were treated with micro-dissection needle (micro-dissection needle group), 50 cases were treated with cold instruments and monopolar electrocoagulation (traditional group) and 21 cases were treated with ultrasonic scalpel (ultrasonic scalpel group). The therapeutic effects including operation time, intraoperative blood loss, visual analogue scale (VAS) on the 1st, 2nd, 4th day after operation and the recovery of wound surface (pseudomembrane disappearance) on the 10th, 15th, 20th day after operation were compared between the three groups. Results The operation time and intraoperative bleeding were less in micro-dissection needle group and the ultrasonic scalpel group than those of traditional group (P＜0.05). On the 1st day after operation, VAS scores were significantly lower in micro-dissection needle group than those of the ultrasonic scalpel group and the traditional group (P＜0.05). On the 2nd and 4th day after operation, VAS scores were significantly lower in micro-dissection needle group than those of the ultrasonic scalpel group (P＜0.05), and there was no significant difference between micro-dissection needle group and the traditional group. On the 10th and 15th day after operation, the proportion of pseudomembrane disappearance was significantly higher in micro-dissection needle group than that in the ultrasonic scalpel group (P＜0.05), and the wound recovered well. On the 20th day after operation, all the wound pseudomembranes disappeared in the three groups. Conclusion Removal of epiglottis cyst with micro-dissection needle has advantages of less intraoperative blood loss, shorter operation time, less postoperative pain and quicker recovery, and is worthy of clinical promotion

Key words: epiglottis, cysts, visual analog scale, micro-dissection needle, blood loss, pseudomembrane