The earliest ancient glue was made of animal skins and horns. At the same time, humans have found that some plants have natural stickiness, such as rubber and gum. So some plants are also used to make glue. In addition, clay has the function of glue, which should be the earliest glue. The paste we all used in the early years is also the most primitive glue. The making of paste is very simple. When flour and rice slurry are mixed and heated, they can be cooked into paste. Paste is also a historical adhesive.

With the development of human beings and the progress of science and technology, human beings have gradually developed chemical synthetic glue, which is now glue and glue stick.