The invention provides a new touch screen keyboard and an input method thereof. The touch screen keyboard and the input method take examples from excellent design ideas and methods of T9, five pen input method, binary system and the like, carry on the QWERT keyboard layout and combine variety in gesture of a touch screen. A keyboard zone structure of the touch screen keyboard is composed of an inner ring and an outer ring, wherein the inner ring has six zones, the outer ring has six zones, and the 26 letters and general punctuations are respectively arranged on the 12 zones. In inputting, users can finish inputting of the letters or the punctuations by enabling a single finger to slide for a distance toward a certain direction. By means of the touch screen keyboard and the input method, users which have various language backgrounds and various input method using customs within the world range can be given full consideration, the sliding space in operation is large, motion restrain is small, operation continuity and comfortable degree are optimum, and real touch typing input can be achieved easily; division of responsibility is facilitated, and efficient character inputting is achieved; requirement for professional skill is low, and design and implement difficulty of related products are small.