Techniques and Tactics of Asian Team and Semi-finals of 19th FIFA World Cup

With the methods of video observation and mathematical analysis,the paper analyzes comparatively the team formation,and players' attack power and defensive ability of Asian team in semi-finals of the 19th World Cup,which show obvious deficiencies in the tactical formation,attack ability,defensive ability and so on.We suggest to draw on the experience of the world strong teams,draw up football development plan,optimize the professional league,strengthen youth football,enhance techniques and tactics,and train a group of core players.