Abstract: A drying method for use of latent heat includes the following steps: A. installing a heating plate and a latent heat device having wax in a dry environmental space; B. placing an article to be dried in the dry environmental space; C. absorbing outside heat energy with the heating plate for drying process; D. utilizing the latent heat device to accumulate heat energy; and E. releasing the heat energy from the latent heat device for drying process. A drying apparatus for use of latent heat includes a box, a heating plate provided on the box, and a latent heat device provided in the box. The box has an entrance and a vent. The entrance is provided with a door to seal the entrance. The latent heat device comprises wax therein to do heat exchange through for drying purpose.