In the first Olympic Games, there was a 100-meter race, 1900 added diving and obstacle swimming, and 1908 added the item "diving depth". This event requires athletes to "jump into the water" and then stay underwater for 60 seconds.

The freestyle competition includes 50m, 1 00m, 200m, 400m, 800m (for women only) and1500m (for men only); Butterfly, backstroke and breaststroke all include100m and 200m; The individual medley adopts the above four strokes, including the 200-meter and 400-meter competitions. Other events include 4x 100 meter and 4 x 200 freestyle relay and 4x 100 medley relay.

There are 8 players in all competitions at the same time. The 50-meter, 100-meter and 200-meter competitions include preliminaries, semi-finals and finals, and the 200-meter and relay competitions will be held directly after the preliminaries without semi-finals.

There are 32 swimming events in the Olympic Games, second only to track and field.

A. Men's swimming: 50m freestyle, 100m freestyle, 200m freestyle, 400m freestyle, 1500m freestyle, 100m backstroke, 200m backstroke, 100m breaststroke, 200m breaststroke,/kloc-. Diving: 3m springboard, 1

0 m platform, synchronized 3 m springboard, synchronized 10 m platform; Water polo:1;

B, women's swimming: 50m freestyle,100m freestyle, 200m freestyle, 400m freestyle, 800m freestyle,100m backstroke, 200m breaststroke, 200m breaststroke,100m butterfly, 200.