1757 watt went to Glasgow university as a teaching instrument repairman. There are not only complete experimental facilities and various instruments here, but also many famous scholars and experts, which provide extremely favorable conditions for Watt. The school also set up an experimental workshop specially for him. 1769, based on a large number of experiments, Watt made a single-acting steam engine and obtained the patent right of the first steam engine after numerous failures. 1782, watt successfully developed a new type of two-way steam engine, which can be widely used in various machines. 1788, the British government officially granted Watt a patent certificate for manufacturing steam engines; From 1775 to 1800, Soho factory jointly operated by Watt and Bolton produced 183 steam engines, all of which were used in textile, metallurgical and mining industries. By the 1930s of 19, the steam engine was introduced to the whole world, and human society entered the "age of steam" from then on. Watt, the inventor who benefited mankind, will always be admired by future generations.