If calculated according to the population ratio, almost all human beings today are wearing clothes. However, it is not known when humans have the habit of wearing clothes. Ordinary clothing will decompose under natural conditions for decades, so it is difficult to obtain relevant information using archaeology. Today's prehistoric knowledge about clothing is basically inferred from indirect evidence that may be used to make clothing, portraits of primitive people and even biological research. A mitochondrial DNA test of a lice living on human clothing in the early 21st century showed that this organism was separated from the lice that lived in human hair more than 7.2 (± 4.2) million years ago. Starting wearing clothes for a long time 100,000 years ago, this time is similar to the hypothesis that humans entered Africa. According to this hypothesis, highly intelligent humans left Africa 100,000 years ago and entered the relatively cold Eurasian region. It has been found that the tools of bone needles have appeared in the Russian region as early as 30,000 BC. The animal skin may be an early and easy-to-make garment. It is a little later to use the leaves, bark and vines to make clothes. It is more complicated to produce cloth and then use cloth to make clothes. Among all kinds of plant fibers, flax was used to make clothing. It is known that the early flax fiber appeared in Georgia 36,000 years ago. The entire piece of textile is more difficult to find, and why humans wear clothes is still unknown. Since ancient Greece, humans have begun to consider this issue. The more influential hypotheses that have been circulating so far are:

Protection says:

The main purpose is to keep warm and avoid mosquito bites.

Shame said:

Similar to Adam and Eve in the Bible, it is believed that humans dress for shame.

Attract the opposite sex:

Contrary to shame, it is believed that dressing is to attract the attention of opposite-sex humans.

Beautification says:

Think that humans dress to make themselves look more beautiful.

Avoid evil theory:

The main interpretation is from the perspective of myth and culture.

In fact, these hypotheses have problems that they cannot explain.