The invention discloses an arc main current resisting contact device and a switch device. The contact device comprises a fixed contact and a moving contact. The moving contact comprises a contact base, a frame, a plurality of contact plates and a spiral spring. The frame is annular-shaped, the inner hole of the frame can be matched with the moving contact, the contact base and the frame are fixedly connected together to form an installing groove with an opening towards the inner hole, the two opposite sides of the installing groove are respectively provided with a groove, each contact plate is provided with two end portions and a contact portion, the contact portion and the two end portions form a triangular shape, the two end portions are arranged on the two grooves in a matched mode and enable each contact plate to move in the radial direction, the spiral spring is bent or connected to be an annular shape, the spring is connected to the installing groove in a matched mode and abuts against each contact plate, the elastic force of the spiral spring enables the contact potion to at least protrude from the installing groove partially and abut against the moving contact, and the current path of the contact device is that current passes through the moving contact, the contact plates, the spiral spring and the contact base. The arc main current resisting contact device and the switch device have the advantages of being higher in reliability, lower in material consumption, more stable in manufacturing process, simpler in assembly technique, and lower in cost.