A headlight socket with an antenna includes a base, cover, first antenna device and connection stand. The base includes a mounting portion. The cover is mounted on the base through the mounting portion and has a sidewall for annularly defining a receiving space. The first antenna device is received in the cover and includes a conductive end. The connection stand is coupled to the sidewall. The connection stand includes a connection port in contact and connection with the conductive end. The headlight socket is mounted on a vehicle. The first antenna device for receiving signals is disposed at the front of the vehicle, thereby enhancing the quality of signal reception. Conventional vehicular antennas are integrated into the headlight socket to manifest advantages of modularization so that an automobile assembly process is simplified, allowing internal circuits to be readily integrated.