A blender includes a blade in which dimple is formed. The blender includes a container body configured to receive food, a main body provided under the container body and supporting the container body, a container lid mounted removably to an upper surface of the container body and configured to open and close an upper part of the container body, and a blade assembly configured to crush food contained in the container body by a blade, where a dimple is formed in the blade. Accordingly, the crushing efficiency of food is improved and noise is reduced.