Terminal assembly and electrical connector

A terminal assembly and an electrical connector, the terminal assembly comprises a plurality of ground terminals, a plurality of signal terminals, and an insulating body. Each ground terminal comprises a ground terminal body, a ground pin, and a plurality of ground assembling pins. The plurality of signal terminals and the plurality of ground terminals are alternately arranged and disposed at intervals along a first direction. At least one signal terminal is disposed between two adjacent ground terminals. Each signal terminal comprises a signal terminal body, a signal pin, and a signal assembling pin. The insulating body is disposed on the plurality of ground terminal bodies and the plurality of signal terminal bodies. A plurality of first distances exist between the plurality of ground pins and the plurality of signal pins. A plurality of second distances exist between the plurality of ground assembling pins and the plurality of signal assembling pins.