Abstract: To resolve the problem, that is the balance between easy to learn and fast to input and the switch between input methods, a new coding technology of the Chinese character was proposed. I}hat is the code of the ShuangMaSanBi input method. I}he design idea is as follows. Sound and shape of the Chinese character have been combined together. The sound adopts the pronunciation of its first letters. The shape adopts five universal strokes of Chinese characters(HengShuPieDianZhe). The coding r}rate is reduced in the coding design and its key mapping. The flip frequency of the selected Chinese character is reduced by the frequency index Finally, the user can input easily and quickly.

Key words: Input method, Coding, Yinxing coding, ShuangMaSanBi