Abstract: By utilizing the repellency of Tibetan characters in the Tibetan grammar, all the basic Tibetan characters are reasonably assigned to the limited keyboard keys of the universal computer. A non-repeated code Tibetan keyboard layout is designed according to the similarity in pronunciation of English and Tibetan alphabet and the rules of computer keyboard layout. And a non-repeated code fast Tibetan input method in accordance with international and national Tibetan character coding standards is implemented on the base of the analysis of Tibetan coding standards. The problem achieving fast Tibetan input without using shift or redundancy keys is also resolved.