Metallic yield damper(short for MYD), also called as the metallic yielding energy dissipation device, as a well-known passive energy dissipation device, provides a new way to resist the imposed loads to structural. The structural response can be reduced when subjected to wind and earthquake by mounting metallic yield damper into the buildings, thereby reduces energy-dissipating demand on primary structural members and minimizes possible structural damage. its effectiveness and low cost are now well recognized and extensively tested in the past in civil engineering. The MYDs are mainly made of some special metal or alloy material and is easy to be yielded and have good performance of energy dissipation when it services in the structure which suffered by seismic events. The metallic yield damper is one kind of displacement-correlated and passive energy dissipation damper.