Objectives: Endoscopic laser cordectomy is a minimally invasive surgical technique for T1 glottic carcinoma. The purpose of the study was to evaluate prospectively before and 6 months after surgery i) acoustic and perceptual parameters, ii) quality of life through a self evaluation (VHI) test. Methods: This longitudinal study aims to assess voice in 16 male patients, recorded before and at 1, 3 and 6 months after surgery. Acoustic parameters (F0, Jitter, Shimmer, Maximal and Minimal F0 and Intensity parameters) were recorded with MDVP and Voice Range Profile (Kay Elemetrics) as well as Maximum Phonation Time (MPT) and speech rate. Voices were perceptually evaluated using the GRBAS scale and the self evaluation was conducted with the Voice Handicap Index (VHI). Correlations between the different dimensions of voice assessment were measured. Results: Perceptual and self evaluation data had a favorable evolution between 1 and 6 months for all patients. Acoustic parameters improved less significantly especially for type V cordectomie. Conclusions: The quality of voice is a very important criterion for the patients. During the first 6 months after laser cordectomy, the perceptual vocal function and the self evaluation improved. The type of cordectomie will influence the evolution of acoustic and perceptual data but there is no correlation with self-evaluation.