Electromagnetic switch and starter with same

The invention relates to an electromagnetic switch and a starter with the electromagnetic switch, and the electromagnetic switch comprises a machine body which is connected with the body of the starter; the plunger mechanism is arranged in the machine body and comprises a plunger and a movable contact piece arranged at the end part of the plunger; the supporting cover mechanism comprises a supporting cover, a storage battery terminal and a motor terminal, the storage battery terminal and the motor terminal are installed on the supporting cover, the supporting cover and the machine body are connected to jointly define a containing space, and the movable contact piece is located in the containing space. The bottom end of the storage battery terminal and the bottom end of the motor terminal are respectively arranged in the accommodating space corresponding to the movable contact piece; and the arc extinguishing mechanism is positioned in the accommodating space and is arranged corresponding to a contact area bet