Abstract “Graphical Representation of Program”is a technique of great potentiality and application. It has been under wide research internationally for the purpose of improving the readability of programs. the SI-NS diagram, is both diagram and program. It enjoys more advantages comparing with the PAD of Japan, NS of Germany and CSD of the United States, and has been validated during long term of software development and education. I hope this technique will draw the attention and recognition from the software and other relative fields at home and abroad.