Abstract: An antenna assembly includes a base, a lower shell, a heat-dissipating support, an antenna body, and an upper shell. The base includes a base body and a connecting portion connected to each other. The lower shell includes a pivotal base. The pivotal base is located at a first end of the lower shell, and a second end of the lower shell is connected to the connecting portion. The heat-dissipating support includes a bottom portion, a fixed portion, and an extension portion connected in sequence, and the bottom portion is pivotally disposed on the pivotal base. The antenna body includes an adapter board and a first antenna connected to each other. The adapter board includes a fixed end fixed to the extension portion. The upper shell includes an accommodation space configured to accommodate the heat-dissipating support and the antenna body, and the fixed portion is fixed to the upper shell.