The invention provides solar silicon wafer drying equipment and belongs to the technical field of solar energy. The solar silicon wafer drying equipment comprises an equipment tank body and a fan mounted on the outer side of the equipment tank body. A hot air return pipe is connected with the air inlet end of the fan. An air outlet pipe is connected with an air outlet of the fan. The other end of the hot air return pipe is connected with the upper end of the equipment tank body in a penetrating mode. A three-way joint is connected with the outer end of the air outlet pipe. The other two ends of the three-way joint are connected with an upper air supply pipe and a lower air supply pipe correspondingly. A conveying device is further arranged in the equipment tank body. A bottom drying box is arranged at the lower end of the conveying device. A plurality of exhaust ports aligned to the conveying device upwards are formed in the upper end of the bottom drying box. The conveying device comprises a connecting frame and a plurality of conveying rollers arranged on the connecting frame at equal intervals in parallel. The conveying rollers are driven by driving motors. The solar silicon wafer drying equipment has the good drying effects on the front faces and the back faces of silicon wafers, the silicon wafer drying efficiency is improved, and the silicon wafer drying quality is also improved.