In this paper，the readers can see a new method of plotting standard electron diffraction patterns for closepacked hexagonal crystals (c/a=1.633). This method is named "Rectangular Method" by the author. It is different from the conventional method and the rectangular method plotting cubic system electron diffraction patterns. In this paper，we have used three mothematics transform factors "a、b、c"，greatly simplified the plotting processes. This method is almost as simple as plotting cubic system standard electron diffraction patterns.