Double-contact board-to-board connector

The utility model relates to the technical field of connectors, in particular to a double-contact type board-to-board connector, which comprises a rubber shell body, a plurality of terminal holes are arranged on the rubber shell body in a penetrating manner, and the plurality of terminal holes are arranged at intervals. Each terminal hole comprises a male end insertion port, a pre-insertion part and a tightening part which are sequentially arranged from top to bottom, the male end insertion port, the pre-insertion part and the tightening part are coaxially arranged, a female terminal is arranged in the tightening part, one end, far away from the tightening part, of the female terminal penetrates through the rubber shell body and extends to the outer side of the rubber shell body, and the end, far away from the tightening part, of the female terminal penetrates through the rubber shell body. The inner wall of one end, far away from the pre-insertion part, of the tightening part is provided with a bump used for