Mouse with Automatic DPI Regulation and Method Thereof

A mouse with automatic DPI regulation and method thereof, comprising a displacement module, an MCU and a DPI module. The displacement module is used for acquiring the displacement information of the mouse, and forming a cursor movement trajectory with the maximum displacement on the display according to the displacement information; the DPI module is used for recording an initial DPI value of the mouse as N, and regulating the DPI value thereof; and the MCU obtains the number of pixels corresponding to the cursor movement trajectory, records the number of pixels as M1, obtains the number of pixels of a diagonal line or a horizontal line of the display, and records the number of pixels as M2; and the MCU sets an optimal DPI value as M2/M1*N, controls and regulates the DPI module. This method solves the problems of manual regulation and optimal DPI configuration on different displays.