Abstract: The paper gives definitions of fabric drying in physical meaning and in popular meaning and makes a distinction between the two.And based on the drying principle of fabrics,the three phases of fabric drying are analyzed along with the factors influencing the drying speed.Two sets of experimental data obtained demonstrated that regardless of kinds of fiber,when the yarn and the construction of the knitted fabrics are the same,the amount of water in gram evaporated per unit area and per unit time from the fabrics during the evaporation phase at constant speed is the same.It corrects the misunderstanding that hydrophilic materials have a lower drying speed,and suggests that it is not necessary to repel using hydrophilic fibers in designing fast-drying fabrics.