The invention relates to a contact base for connecting two contacts. The contact base includes a contact base body, at least one pair of contact fingers, and a pair of guide rings. The contact base body has a channel for inserting two contacts from the two ends, and an axial limiting hole. The contact fingers and the guide rings are positioned in the channel, and are arranged at the two ends of the channel from inside to outside. The contact base of the invention connects contacts through a simple structure. The contact base has the advantages of low cost and convenient operation. The relative displacement between the contacts and the contact base can be limited, and the contacts and the contact base can be prevented from failure in electrical contact. The invention further relates to a contact system for high-voltage switches which adopts the contact base.