To clarify the deep electrical structure of the Mujicun porphyry copper deposit in the northern Taihang Mountains, explore its coupling with the "source-transport-storage" processes of the mineralization system, and further advance the understanding of the deep background of porphyry copper deposits within the North China Craton, this study carried out two-dimensional inversion using the nonlinear conjugate gradient algorithm, based on 13 Magnetotelluric (MT) stations traversing the Mujicun ore concentration area. An electrical model down to a depth of approximately 40 km was constructed. The model clearly reveals two sets of high-conductivity channels extending into the middle-lower crust, along with a NNE-trending fault system that controls these electrical features; both are interpreted as conduits for deep ore-bearing fluids. Additionally, the model identifies a mineralization source zone or a remnant magma chamber at a depth of about 25 km. The obtained electrical structure finely delineates the spatial architecture of the mineralization system, indicating that this "channel-reservoir" coupling system was governed by the reactivation of the Taihangshan deep fault zone under a Late Mesozoic extensional setting, accompanied by magma emplacement. It thus stands as a typical example of crust-mantle interaction and mineralization during the destruction of the North China Craton.