The invention relates to a contact base, a manufacturing method of the contact base and a circuit breaker employing the contact base and aims at solving the problem that the connected part of the follow-up contact base and a transmission mechanism is mechanically damaged easily in the prior art. In order to solve the technical problem, a connector of the contact base is arranged on a contact base body through a connection structure, so that materials, such as steel and alloys, with higher strength, or an aluminum material, manufactured by other methods of precision casting and the like, with higher strength can be selected by the connector with relatively high strength requirements; the connector is connected to the contact base body to meet the strength requirements; and the problem that the connector is easily damaged is solved. Meanwhile, the problem of over-high cost of the contact base caused by an overall strength enhancement method is also avoided. Meanwhile, in the manufacturing process of the contact base, the connector is firstly fixed on the contact base body and then a transmission mechanism matching structure is processed on the connector, so that guarantee of the accuracy of the final matching structure is facilitated.