Abstract: Constructing a dynamic reversible crosslink network of resin-based electrical materials is an important means to achieve environmental protection. Based on the theory of dynamic exchange reaction, this article introduces a transesterification accelerator, triethanolamine, and dynamic disulfide bonds into the traditional epoxy/anhydride resin system to construct a vitrimer with dual dynamic crosslinking. The pin-plate electrode model is used to study the effects of different disulfide bond contents of the resin system on their characteristics of initiation and growth of electrical tree, as well as partial discharge. Meanwhile, fractal dimensions are used to quantitatively describe the morphological characteristics of electrical treeing in different resin systems. The trap properties of vitrimers with different disulfide bond contents and their electronic orbital distribution characteristics are analyzed using surface potential decay tests and quantum chemical calculations of crosslinked structures. Results indicate that as the number of disulfide bonds in the resin system increases, the trap energy level of the resin rises; the electronic orbital energy level decreases; the initiation voltage of the electric tree shows a slight decline; and both the growth rate of the electrical tree and its fractal dimension decrease. Subsequently, through simulation of the degradation recovery experiments for wound impregnated devices, the dynamic exchange and degradation characteristics of the resin are investigated. The study reveals that the dual dynamic crosslinked network endows the resin with excellent dynamic properties, achieving efficient and non-destructive recovery of high-value internal materials. This provides novel perspectives and options for the environmental sustainability of electrical engineering materials and the recycling of decommissioned equipment.