Nanocomposite permanent magnets have a high theoretical magnetic energy product [(BH)max], but when manufacturing bulk magnets, there are currently no encouraging results, thus new theoretical models are still needed as guidance. In this paper, the anisotropic-shaped soft-magnetic-phase is introduced into the composite model through micromagnetic simulation. The Nd2Fe14B/Fe65Co35 nanocomposites with anisotropic-shaped soft-magnetic-phase can obtain a theoretical (BH)max of 93.9 MGOe, which is 22% higher than the model with cubic soft-magnetic-phase with similar soft-magnetic-phase content. An approximate vortex state coordinated distribution of the anisotropic-shaped soft-magnetic-phases in nanocomposites during the magnetization reversal can make the energy distribution of magnetic interaction more uniform. Thus, the anisotropic-shaped soft-magnetic-phases can delay nucleation during demagnetization, and improve the squareness of the demagnetization curve, and significantly increase the (BH)max. Our simulation results can provide an effective way for nanocomposites to improve their magnetic properties.