Objective To explore the techniques and effects of excision of vocal cord polyps under sustaining laryngoscope. Medthods Nasal endoscopy was used to obtain a better exposure during excision of vocal cord polyps under sustaining laryngoscope. Results Out of the 128 cases, 100 cases (78 1%) were cured and 28 cases (21 9%) were improved. Among 50 cases of type Ⅰ polyps, 43 (86%) were cured and 7 (14%) improved; among 40 cases of type Ⅱ polyps, 38 (95%) were cured and 2 (5%) improved; among 38 cases of type Ⅲ, 19 (50%) were cured and 19 (50%) improved. The therapeutic effects in cases of type Ⅰ and Ⅱ polyps were significantly better than those in cases of type Ⅲ polyps ( ? 2=13 442 and 20 057; P =0 000). Follow up for 5 months ～ 4 years (mean, 2 years) found no recurrence and complications. Conclusions Application of nasal endoscopy in operations for vocal cord polyps under sustaining laryngoscope may reduce the invasion during operation, shorten the operation time, and avoid or minimize the occurrence of complications.