A shield connector structure 1 includes a pair of connectors 2 and 6 that is capable of being fitted to each other and a conductive connector attachment portion 11. One connector 2 includes a terminal metal part 21, an insulating connector housing 22, and a conductive shield shell 23. The other connector 6 includes a terminal metal part 61, an insulating connector housing 62, and a conductive shield shell 63. The shield shell 23 is provided with a connection portion 49, and the shield shell 63 is provided with a connection portion 83. When the connectors 2 and 6 are fitted to each other so that the shield shells 23 and 63 are shield-connected to each other, each of the connection portions 49 and 83 is connected to the connector attachment portion 11 and the shield shells 23 and 63 are grounded.