The limitation so direct or indirect laryngoscopy and laryngogram in detemining the exact site and anatomiclocation of laryngeal carcinoma were well documented by many authors. As compared with laryngoscopy andlaryngogram, CT study for laryngeal cancer is more exact and accurate method demonstrating anatomic sites ofinvolvement, invasion into deep soft tissue spaces of endolarynx, destruction of laryngeal cartilages and cervicalmetastasis. Fourteen laryngeal cancer patients proven by laryngoscopic biopsy were further examined by computedtomography for staging. The authors compared laryngoscopic findings with those of computed tomography, and theirclinical, surgical and computed tomographic findings were analysed. The results were as follows; 1. All patientswere proved as squamous cell carcinoma. They were 12 males and 2 females aged over 50 yrs. 2. Common clinicalsymptoms were hoarseness, dysphagia and swallowing difficulty. The pirmary anatomic sites determined by CT were 8transglottic, 2 glottic, 2 supraglottic and 1 pyriform sinus respectively. They were 2 T1. 7 T2, 1 T3, 3 T4 by TNMsystems, respectivly. (One case was difficult to evaluate exactly). 3. Invasion into deep soft tissue spaces ofendolarynx, cartilage destruction, and neck metastasis were relatively predominant in transglottic caracinomas. 4.CT was superior in evaluating tumor invasion, especially into deep soft tissue spaces of endolarynx, laryngealcartilages and metastasis ot soft tissue and lymph nodes of neck. However CT had some limitation in determiningprimary site of laryngeal cancer.