Phone key confirmation method and its device

The invention relates to a method for determining keystrokes of a telephone and a device thereof. The device includes an integrated circuit, a display screen, a keystroke group and a backlight module. When the telephone is started, interfaces of the whole keystroke group in the telephone emerge a lighted and colorful single-color light or no light; by pushing any number key for the first time, the former green light of the key is changed into red light; and while by pushing the same key for the second time, the light of the number key is changed into blue light. In other words, through continuous changes of the light, whether the number key has been pushed or has been dialed repeatedly is confirmed. At last, the light of the key is returned to the former green light by pushing a confirmation key or a transmission key, and then all colorful light in the interfaces of the keystroke group is darkened automatically by pushing an end key.