An electrical connector assembly (100) with antenna function comprising: a PCB (50) comprising a feeding circuit and a grounding circuit; an electrical connector (20) installed on the PCB comprising a metal shell (21) electrically connecting to the grounding circuit; a metal patch (30) connecting to the metal shell comprising a radiating element (33) and a connecting element (31); the radiating element electrical connecting to the feeding circuit; the connecting element connecting the radiating element and the metal shell; the radiating element, the connecting element, and the metal shell forming an antenna that serves as a medium for transmission and reception of electromagnetic signals.