The invention discloses a detection method and device for a multifunctional detector of an automatic verification system of an electric energy meter. The method comprises the steps of acquiring binding post pressure, a current binding post temperature, an input voltage of a voltage input port, an input current of a current input port, pulse and an acquisition signal input by an auxiliary terminalof the automatic verification system by a sensing module; converting the acquisition signal to a conditioning signal which can be directly acquired by a signal conditioning module, and outputting theconditioning signal to the signal conditioning module; performing analog-digital conversion on the conditioning signal by the signal conditioning module, generating a digital signal, performing discrete processing on the digital signal, and inputting the digital signal subjected to discrete processing to a processor module; and receiving the digital signal by the processor module, and generating ameasurement result according to the digital signal.