Objectives: Comparison the vocal cord carcinoma grade T1 through clinical, endoscopy, CT - scanner. Subjects and Methods: prospective study. 37 patients were diagnosed the vocal cord carcinoma stage T1 in ENT National Hospital from 06/2013 to 06/2014. Results: mean age 58 years, mostly male patients: 97.3 percent, symptom: 100 percent hoarseness, development of disease around 1-3 months: 48.6 percent, morphological lesions: contact ulcer: 86.5 percent, contact ulcer combine leukoplakia (10.8 percent). Evaluation lesion morphology of vocal cord carcinoma with direct laryngoscopy is better than the indirect laryngoscopy, the movement of the vocal cords and arytenoid Direct laryngoscopy assess the exact location of lesions on the anterior commissure, inferior glottic cartilage, Morgagni space and superior glottic. CT-scanner allow assessment of the invasive front the anterior commissure. Comparison between the indirect laryngoscope with 70o°optic and direct laringoscope: no difference of mophologycal, direct laryngoscopy evaluates more exactly than the indirect laryngoscope, especially lesions on anterior commissure and morgani space, comparison between direct laryngoscope: the direct laryngoscope evaluates the lesions on the vocal cord more exactly but CT-scanner evaluates the extend of invasive anterior commisure better. Conclusion: Patients with hoarseness lasting more than 3 weeks should be checked by indirect laryngoscopy with 70o° optic combined with direct laryngoscopy and take tracheolaryngeal CT-scanner to explants exactly lesions of morphology and extent of invasion of laryngeal carcinoma grade T1, avoid misunderstand lesions.