The invention relates to an electrical inspection grounding handcart and a working method, and belongs to check-out equipment of electric appliances. The technical scheme adopted by the invention is described as follows: the electrical inspection grounding handcart comprises a self-help movable chassis and is also provided with a three-phase moving contact capable of moving up and down, wherein the three-phase moving contact is arranged on the front end of a moving contact base; the rear part of the moving contact base is arranged on a lifting device; the lifting device is arranged on a vertical vehicle frame; a grounding static contact conductively connected with each phase of the three-phase moving contact is arranged below the moving contact base; a pendulant grounding knife-switch is arranged below the grounding static contact; an extension end of a linear motor is connected at the front end of the grounding knife-switch; the vehicle frame is articulated with the rear end of the linear motor; the extension end of the linear motor moves to drive the grounding knife-switch to upswing and be connected and electrified with each phase of the grounding static contact; the grounding knife-switch is connected with a grounding line.