The invention relates to a high voltage auxiliary solar drying device and method. A heat collecting chamber heat preservation layer is arranged on the inner side of a solar heat collecting chamber, an air inlet is formed in the right side of the solar heat collecting chamber, an air port formed in the left side of the solar heat collecting chamber is communicated with a solar drying chamber, and a thin film solar cell panel A and a heat collecting panel A are arranged on the upper portion of the solar heat collecting chamber. A drying chamber heat preservation layer is arranged on the inner side of the solar drying chamber, a water tank is arranged on the right side of the solar drying chamber, a reflector is arranged on the left side of the solar drying chamber, and an air outlet, a thin film solar cell panel B, a heat collecting panel B, a high-voltage electrode pin and a high-voltage electrode plate are arranged from top to bottom. Dry air is heated to 40 DEG C to 50 DEG C through the thin film solar cell panel A and solar energy obtained after heat collection through the heat collecting panel A, matter input by a conveying mechanism and needing to be dried is dried through the dry air and an auxiliary high-voltage electric field, and solar energy is fully utilized by a thin film solar cell panel coupling storage battery energy storage system. Solar energy and high voltage are combined, the drying rate is increased, drying efficiency is improved, a good drying effect is achieved, and the high voltage auxiliary solar drying device and method are clean, efficient and free of pollution and have wide application prospects.