In order to enable more countries to promote the sport of badminton, the competition system of badminton in Badminton Rules, which has a history of a century, was changed in May 2006 from the original ”Exchanging Right of Serving” of 15 points into the ”System of Scoring in Every” of 21 points, so as to increase the enjoyment in watching the competition. Owing to the shortening of competition system, the fault rate in every appears much more important in the whole competition, and the change in the competition system shows whether there is any difference between the employment of tactics in the competition and the methods of training. Therefore, this research will, by means of probing into the literatures, study in detail the change of the competition system about its purpose, characteristics, particulars in competition, technical features in competition, tactical features in competition, and philosophical features in competition, in an attempt to help elevate the training efficiency of the contestants of our country and making them to stand out in international competitions.