The present invention is phonetic text input method and the digital keypad thereof. All the letters are arranged in the order of alphabet separately in 3,4 or 5 areas of the initial area, the front area, the main area, the back area and final area, where the main area is single code one with arranged 4-8 letters displayed in initial or reset state, the front area and the back area are double codeones with 1-10 letters, and the initial area and the final area are three code ones with 0-10 letters. At the same time, two of the digital keys are defined as uppercase / lowercase shift key and symbol / letter shift key separately. The method is novel, simple and convenient and is suitable for input of phonograph, such as Latin, Russian, Greek, Arabic, phonetic Chinese, Slavic, etc.