Recently, the displacement-field-driven hysteretic switching of superconductivity was reported in ferroelectric bilayer T_d-MoTe₂. Such direct coupling between ferroelectricity and superconductivity offers promising pathways for low-power, non-volatile memory devices, but the underlying coupling mechanism remains poorly understood. Here, we demonstrate that the ferroelectric switching of superconductivity can naturally originate from an intralayer, p-d orbital pairing. In bilayer T_d-MoTe₂, the ferroelectric polarization segregates the p and d orbital electrons into distinct layers, thereby suppressing the intralayer, p-d orbital pairing. By developing a phenomenological Landau-Ginzburg model, we establish that the hysteretic switching of superconductivity requires Pᵣ < P_c < Pₛ, where P_c is the critical pair-breaking polarization and Pᵣ (Pₛ) is the remanent (saturated) polarization. Crucially, our scenario of intralayer, p-d orbital pairing indicates that the bilayer T_d-MoTe₂ features an anisotropic momentum-dependent pairing gap and can transition into a pair density wave by tuning the chemical potential, which provides clear pathways for experimental verification.