Circuit breaker testing device and testing method

The invention discloses a circuit breaker testing device and method, and relates to the field of circuit breaker testing equipment.The circuit breaker testing device comprises an assembling platform and a circuit breaker body located above the assembling platform, the upper portion of the circuit breaker body is provided with a switch used for opening and closing, and the two opposite side faces of the circuit breaker body are provided with power connection ports; a positioning mechanism and an elastic clamping mechanism which are oppositely distributed are arranged above the assembling platform, through the design of the positioning mechanism and the elastic clamping mechanism, when a circuit breaker body is in butt joint with the first assembling column firstly, the light touch assembly and the first limiting assembly can be triggered, the elastic clamping mechanism is started to enable the second assembling column to automatically stretch out, and then the circuit breaker body is assembled. The two sides o