The purpose of this study is to have a further understading of the actual condition of yellow and red cards in world's high standard of international match at present, to explore the regulation applied and its characteristic. These have great significance in upgrading the stadard of rdferees' judgement and the individual technique of players and giving full play to their technique in the field. This study was made on the 168 games during the '90、 '94, and '98 World Football Cup. I used a VTR to record the process of all the games in the three world football cup matches from the televised program made by NHK and CTS and played them in the football laboratory of Taiwan College of Physical Education, regenerating a slow-motion projection, repetitious observation, and recorded the process of the appearance of red and yellow cards, and make further analysis and study. The followings are the conclusion arrived: 1. Red and yellow foul cards appeared more and more often during the three world football cups. In which, the appearance of red card was 16 �� match>14 �� match>15 �� match and the appearance of yellow card was 16 �� match>15 �� match>14 �� match. The reason was that the number of games increased and the competition in the field became fiercer everyday. 2. As to the comparison of the appearance of red and yellow cards at different stages of the three world football cups, both were better in the second stage than in the first stage. 3. As to the comparison of the appearance of red and yellow cards at different stages of the three world football cups, the appearance of red card was defense zone>center>attack zone while the appearance of yellow card was center>defense zone>attack zone. 4. Most of the reasons for being given the penalty of red card and yellow card in the three world football cups are malicious behavior and serious foul. In which intentional tripping was the most common.