Method and system for rapidly drawing on electromagnetic screen

The invention is applicable to the technical field of an electromagnetic screen and provides a method and a system for rapidly drawing on the electromagnetic screen. The method comprises the following steps that an upper computer receives an image needing to be drawn and analyzes the image needing to be drawn to obtain an image coordinate, a pressure value and color information; the image coordinate, the pressure value and the color information are transmitted to a lower computer through a serial port; according to the received image coordinate, pressure value and color information, the lower computer controls an electromagnetic pen to move on the electromagnetic screen according to the image coordinate, the pressure value and the color information; the electromagnetic screen receives the color information and the image coordinate which are triggered by the electromagnetic pen under the pressure value to form a drawn image. The method and the system provided by the invention can rapidly and effectively convert the image into the drawn image.