A female connector and a male connector are disclosed. The female connector includes a ring-shaped outer wall, a first terminal seat, a second terminal seat, and a third terminal seat. The male connector includes a front connecting block. A front end surface of the front connecting block includes a first terminal hole, a second terminal hole, and a third terminal hole. The first terminal hole has a first terminal supporting surface. The second terminal hole has a second terminal supporting surface. The third terminal hole has a third terminal supporting surface.