Disclosed is a compact type shunt capacitor complete device. The complete device comprises a grounded switch, a shunt capacitor set, a series reactor, a lightning arrester and a current transformer, wherein the series reactor, the lightning arrester and the current transformer are connected with the shunt capacitor set; a phase A, a phase B and a phase C of the series reactor are overlaid together; with the adoption of the technical scheme, the complete device breaks the traditional technical bias, the series reactor is arranged at the side of a neutral point behind the shunt capacitor set, that is, the series reactor is back arranged. In this case, when the complete device works normally, not only are the phase ground and the inter-phase voltage of the series reactor very low, but also the phase ground and the inter-phase voltage which the shunt capacitor set and lightning arrester bear are as low as the voltage of the system, so that the series reactor is more reasonable than the series reactor arranged at the side of the power source (front arranged) on various aspects such as the reliability and economical efficiency of the system operation.