It is said that there was a mill in Europe in the 14th century, but it is recorded that in 1480 Italian Leonardo da Vinci designed a mill. In 1553, the French Brulier rolled gold and silver plates to make coins. Since then there have been rolling mills in Spain, Belgium and the United Kingdom. Fig. 1 The rolling mill designed for the production of round rods in 1728 was designed in 1728 for the production of round bars in the United Kingdom. The United Kingdom had a serial small mill in 1766. In the middle of the 19th century, the first reversible plate mill was put into operation in the United Kingdom and rolled out of shipboard iron plates. In 1848, Germany invented the universal mill. In 1853, the United States began to use a three-roller profile mill (the first three-high mill in Fig. 2 was viewed from the side) and it was mechanized by a lifter driven by a steam engine. Then the United States appeared Laute mill. In 1859 the first continuous rolling mill was built. The universal profile rolling mill emerged in 1872; in the early 20th century, a semi-continuous strip rolling mill was made up of two three-roll roughing mills and five four-high finishing mills.