/kloc-The relay race at the end of 0/9 was officially listed as an international competition. At that time, the rules of the game stipulated that the receiver should receive the passer's baton in the 20-meter relay zone during running. Now 4× 100 meter relay runners can start pre-running in front of the100 meter relay area, but the relay can only be completed in the relay area. 1908, the men's 4× 400m relay was listed as an Olympic event. 19 12 men's 4×100m was added to the 5th Olympic Games. The women's 4×100m and 4× 400m were listed as Olympic events in 1928 and 1972 respectively. At present, the world records of men's 4× 100 m relay race and 4×400 m relay race are 38″03 and 2 ′ 56 ″16 respectively, which are held by the United States team. The women are 4 1 "60 and 3' 19" 23, respectively, which are maintained by the German Democratic Republic team.

At the China 1933 National Games, men and women started the 4× 100-meter relay race, with results of 44″4 and 54″6. At present, these two national records have been raised to 40 "20 and 46" 56. The national record for men's 4× 400m is 3 ′13 ″ 7, and that for women's 4× 400m is 3 ′ 43 ″ 3.