The invention discloses an automatic turnover type hot air infrared fruit and vegetable drying device. The device comprises a support, a conveying belt, a frame, a power motor, a drying cavity upper cover plate and a draught fan. Hot air is fed into a drying cavity through a hot air pipeline via an air inlet formed in the position of the frame of the conveying belt. The invention further discloses an automatic turnover type hot air infrared fruit and vegetable drying method. The water content of fruit and vegetable materials is calculated through the operating speed of the conveying belt, the base angle of the ridge-shaped drying cavity upper cover plate and the interval of infrared light pipes, the drying effect of the fruit and vegetable materials can be accurately controlled, the quality of dried fruits and vegetables is improved on the basis of improving quality research on the dried fruits and vegetables and reducing energy consumption, transportation is convenient, drying time is greatly shortened, production efficiency is improved, drying energy consumption is greatly reduced, energy is saved, and environment friendliness is achieved.