A two-dimensional (2D) semiconductor with geometry structure and generating method thereof is disclosed herein and the method includes following steps: forming a nano-layer; disposing a 2D material on a substrate; forming a medium layer on the 2D material; transferring the medium layer and the 2D material to the nano-layer; removing the medium layer and leaving the 2D material on a surface of the nano-layer.. In accordance with the generating method for 2D semiconductor with geometry structure, a nano microstructure is implemented to enhance and control the 2D materials for field emission and photon emission efficiency. |