The invention relates to a novel electrogenerated chemiluminescence analyzing and detecting device with expanded functions, which belongs to the field of analysis and testing. A glassy carbon electrode in a relevant device in electrogenerated chemiluminescence analysis and detection is quite easy to be polluted by organic substances generated by electrolysis in an absorption manner, and performances of the glassy carbon electrode can be quickly attenuated due to the pollution in the absorption manner. In order to solve the problem, the novel electrogenerated chemiluminescence analyzing and detecting device structurally comprises an electrolytic tank, a glassy carbon electrode, a counter electrode and a reference electrode, wherein the glassy carbon electrode, the counter electrode and the reference electrode are inserted in the electrolytic tank, and a cylindrical glassy carbon electrode body which is positioned at a working end and wrapped by a tubular electrode jacket is disposed inside the glassy carbon electrode. The novel electrogenerated chemiluminescence analyzing and detecting device is characterized by further structurally comprising an annular piezoelectric element, an end surface of the annular piezoelectric element is combined with an end surface, which is connected with a binding post, of the cylindrical glassy carbon electrode body, the binding post penetrates through a center hole of the annular piezoelectric element, and the annular piezoelectric element is simultaneously wrapped by the tubular electrode jacket. The novel electrogenerated chemiluminescence analyzing and detecting device in the scheme has an instant ultrasonic electrode self-cleaning function and is compact in structure.