At present, it is generally believed that the dado originated in England in the 16th century. Influenced by the local rainy humid climate, its primary function is to prevent the damp cold under the wall play a role of heat preservation. Another view is that its origin can be traced back to the Netherlands in 1300. Its main function is to prevent the back of the chair scratching the wall, while reducing the damage to the wall caused by the scabbard worn by the soldiers.