The invention relates to the field of charged hydraulic equipment, in particular to an insulating system of a charged hydraulic pipeline. The insulating system at least comprises a liquid inlet pipe (1) and a liquid outlet pipe (4), wherein the liquid inlet pipe (1) and the liquid outlet pipe (4) are connected with each other by a nut jacket (3), so as to form an integrated structure; the insulating system is characterized in that an insulating pad (5) is fixed at the connecting end surface of the liquid inlet pipe (1) and the liquid outlet pipe (4); and an insulating sleeve (2) is arranged in the contact position of the nut jacket (3) and the liquid inlet pipe (1). Because the insulating sleeve of the charged hydraulic pipeline additionally arranged between the liquid inlet pipe and the nut jacket is tightly attached between the liquid inlet pipe and the nut jacket and insulating pads on the end surfaces of the liquid inlet pipe and the liquid outlet pipe are tightly compressed under an effect of a tightening force of the nut jacket, a effect of completely isolating absolute insulation is achieved; and as the compressed insulating pads are tightly attached to the end surfaces of the liquid inlet pipe and the liquid outlet pipe, the device obtains very reliable sealing performance and double effects of insulating and sealing are achieved.