An eyeglass with an elastic element and an assembly method thereof are disclosed. The eyeglass with an elastic element include a lens frame set with at least one lens, a pair of temples pivotally connected to two opposite ends of the lens frame, respectively, and at least one elastic element provided at a pivotally connected portion of the lens frame and the temples. The eyeglass is characterized in that the elastic element is formed of a high polymer material so as to provide a restoring force when the temples are biased outwards.