Various frictional forces and other obstacles that attenuate free vibration are called damping. The "special" components placed on the structural system can provide resistance to motion and reduce the energy of motion, which is called dampers. Using damping to absorb energy and reduce vibration is not a new technology. In aerospace, aviation, military industry, guns, automobiles and other industries, various dampers (or shock absorbers) have been used to reduce vibration and dissipate energy. Since 1970s, people have gradually applied these technologies to buildings, bridges, railways and other structural projects, which have developed very rapidly. In particular, the hydraulic viscous damper with a history of more than 50 years experienced a long process of a large number of experiments, strict examination and repeated argumentation, especially earthquake tests, before it was accepted by the American structural engineering community. The following process 1 summarizes its development in the United States: it is widely used in aerospace, aviation, military industry, machinery and other industries, and its successful application history for decades. Since 1980s, he has done a lot of experimental research in two earthquake research centers in the United States and published dozens of related papers. In 1990s, the National Science Foundation and the Civil Engineering Society organized two large-scale alliances. The comparative test done by the third party gives authoritative test reports for the reference of professors and engineers. On the basis of affirming the above achievements, it has passed the evaluation of almost all relevant institutions and codes, and the application method has been affirmed and stipulated by the management department, which has brought hundreds of practical applications in structural engineering. These structural projects have successfully withstood the test of earthquakes, strong winds and other disasters and are very successful.