When we talk about spiders,we will always mention their orb-webs.As a matter of fact,orb-webs are indispensable parts of spiders with the complex biological and mechanical environment,such as wind load,insects impact and predator threats.In recent years,considerable researches have been conducted to understand the mechanical mechanisms of orb-webs and material properties of spider silks in the webs to indicate that spider orb-webs have many excellent mechanical properties due to their exquisite structures and unexceptionable material property of spider silks.