Array input method and system for three-dimensional space

The invention proposes an array input method and system for a three-dimensional space. The method comprises the steps of receiving an input request of a user; responding to the input request and setting the display layout of an alternative input element in the three-dimensional space according to the type of an element to be inputted; displaying the alternative input element in the three-dimensional space in front of the user in the form of three-dimensional array; adopting a three dimensional space positioning technology to detect an input medium of the user, positioning the moving position of the user in the three-dimensional array by the input medium in real time, detecting a three-dimensional coordinate at each position, so as to take the alternative input element corresponding to each three-dimensional coordinate as the input element of the user until detecting a confirmation completion operation of the user; and transmitting the input element of the user to a subsequent operating system and finishing an input operation. The array input method for the three-dimensional space provided by the invention distributes numbers, letters or symbols, etc. on different depth layers in the three-dimensional space, thus the problem that input is inconvenient in the three-dimensional space can be solved, and the input of the user in the three-dimensional space is more organized and efficient.