|（1.School of Physical Education，South China Normal University，Guangzhou 510006，China；2.Department of Physical Education，Guangdong Pharmaceutical University，Guangzhou 510006，China)
Abstract: By using the comprehensive evaluation method, the author classified the offense ability, defense ability and comprehensive offense and defense ability of various men’s basketball teams participating in the Rio Olympic Games, analyzed the advantages and disadvantages of various teams, and probed into the changing of the strength structure of modern world men’s basketball by combining the competition results and comprehensive strength of various teams par-ticipating in the Beijing and London Olympic Games. This research indicates that the strength of various men’s basketball teams in the Rio Olympic Games was classified into 4 classes. The comprehensive strength of team USA, team Spain and team Australia was the strongest, especially the strength of team Australia increased significantly, getting into the first class. In the three Olympic Games, the strength of team USA was always the strongest. The strength of European strong teams such as team Spain and team Serbia, as well as team Australia, was increasing constantly, close to team USA; the strength of South American basketball teams was declining constantly, the strength of African and Asian basketball teams was listed the last. Advanced basketball reserve talent cultivation systems and world topnotch basketball leagues not only cultivated a lot of excellent players for various European countries, but also promoted the fusion of various basketball styles in the world, and leaded the trend of basketball development. It is difficult for the Chinese basketball team to catch up with world basketball development, and its strength difference from world strong teams is becoming greater and greater.
Key words: strength structure of world men’s basketball；Olympics Games；rank sum ratio method