The invention provides a zero repeated code design method for Chinese character encoding component keyboard merging. The method comprises the following steps that: firstly, dividing Chinese character components into an uncontrollable configuration component and a controllable configuration component, wherein a division condition is that a keyboard merging repeated code generated among all updated uncontrollable configuration components is zero guaranteed; and then, operating one zero repeated code Chinese character component keyboard merging program which is specially designed between two classes of different configuration components to realize that the keyboard merging repeated code of all Chinese character components is zero. By use of the selective merging design method among components, discrete characteristics among different components can be utilized to a maximum degree. However, zero repeated code merging can not be loaded by a human brain, and a zero repeated code Chinese character component merging program is operated only under a design condition that merging repeated codes are avoided to the merging repeated code to be scientifically and reasoningly reduced to zero so as to truly implement a zero repeated code character input operation within a 5000 common character range and under a condition of four-code length even three-code length.