Triangular hats originated in Europe and prevailed in1late 7th century to18th century. In its heyday, it was not only the standard outfit of ordinary male intellectuals, but also one of the standard accessories of military uniforms. 1789 after the French revolution, it was replaced by a double-horned hat. The triangle hat is worn with the main sharp corner in front.

The triangular hat is the evolution of the wide-brimmed hat used by Spanish soldiers in Flanders in the17th century, which provided rain protection for Spanish soldiers in the rainy season in Flanders. 1667, a war broke out between France and Spain. The use of triangular hats spread to the French army. This style was brought back to France and became popular among French citizens and the royal family of King Louis XIV. After that, this fashion spread all over Europe, whether as civilian or military uniforms. In the whole18th century, the triangle hat style was the mainstream of European hats.

The popularity of triangular hat declined rapidly at the end of 18 and was gradually replaced by double-angle hat. The reason is that when wearing it, the sharp corner faces forward, which will block the line of sight for soldiers with guns on their left shoulders. Double-horned hats were widely used by European officers from the 1790 s to the first world war, and they were not out of date until the second world war. /kloc-in the 0 th and 9 th centuries, Shako replaced the triangular hat and became the mainstream headdress for enlisted soldiers. For ordinary men, the status of triangle hat is gradually replaced by top hat.