The objective of the present investigation was to evaluate the mass transfer during the osmotic dehydration of odor gourd slices (Sicana odorifera naud). Pumpkin slices were immersed in a hypertonic solution of sucrose during time intervals of 1, 2, 4, 6, 8 and 10 hours, three temperature levels of 30, 40 and 50 ° C were used and three levels of solution concentration osmotic (45%, 55% and 65%) with a fruit ratio: 1: 6 solution. It was found that the loss of humidity, weight loss and gain of solids varied significantly with the increase in temperature and / or concentration, giving the best conditions at a temperature of 50 ° C, concentration of 65 ° Brix and 6h of process, being the concentration of the solution and the temperature the variable that most influenced during the osmotic dehydration of pumpkin slices.