On a hot summer day, the swimming pool and beach are the best places to cool off on vacation. While enjoying the coolness in the water, people also turn the pool and beach into colorful swimwear shows. Swimwear refers to special clothing worn during water or beach activities. Whether in the East or the West, the ancients did not have a swimsuit specifically for swimming. The swimsuit in the modern concept slowly developed after swimming became a sport. The century-old evolutionary history of modern swimwear is also the evolutionary history of humanistic concepts and technological development. The changes in swimwear have had a profound impact on swimming, and it also reflects people's pursuit of fashion, practicality, and health.