To participate in bodybuilding competition, male athletes must wear the specified style of competition underwear, and female athletes must wear solid bikinis. "Bikini" swimsuit must be able to show both abdominal muscles and lower back muscles. Competition costumes shall be monochrome, and there shall be no patterns, patterns, trademarks and any additional decorations, nor gold or silver flashing colors. In the mixed bodybuilding competition, the color of the competition clothes of male and female athletes should be the same monochrome.

In bodybuilding competition, the athlete's number plate must be firmly hung or sewn on the left front side of the competition pants. Athletes are not allowed to wear shoes and socks during the competition; Do not wear watches, rings, bracelets, anklets, necklaces, earrings, wigs and other accessories; No sugar, no smoking, no tape, no bandages, no artificial thorns. Female athletes can't put their hair over their shoulders. Athletes can manually smear the whole body, but they must use it 24 hours before the preliminaries. Athletes can also apply a small amount of oil, such as vegetable oil, skin cream or liquid, but not pearl oil. Never put too much oil on your body. If the referee finds out, you have to wipe off too much oil to play.