Porphyrin small molecules have been widely used in organic solar cells in recent years. However, further improvement of device efficiency is restricted owing to the absorption defects between Soret and Q bands of porphyrin donors and the limitation of application. The aim of this study was to compensate for its inherent defects and explore the photoelectric properties combined with the non-fused non-fullerene acceptor (NFA) to increase its universality. To achieve this goal, seven mono-porphyrin donor molecules with A-π-D-π-A configuration (SM1-SM7) were designed by modifying the π-bridges. The results indicate that π-bridge and side chains can lead to different ways of intramolecular charge transfer, which obtaining a new absorption peak between Soret and Q bands while the absorption range was extended to a near-infrared region (up to 1200 nm). When combined with the NFA, the larger ratios of intermolecular charge transfer and recombination rates (kinter-CT/kinter-CR) exceed 1011, which is conducive to obtaining higher short circuit current (JSC). At the same time, the open-circuit voltages (VOC) of devices were close to and/or higher than 1.0 V, indicating that the imbalance between JSC and VOC will be broken. Finally, we hope that this work can provide a strategy for designing potential panchromatic absorption donor molecules.