A relationship between moisture and capacitance of foods drying process is proposed. Pure sucrose solution,Carrot and Asatsuki as samples. The results showed significant correlation between the capacitance of each sample and moisture content. The moisture content and capacitance decrease with increase in drying time for every sample at 60 ℃ during drying process. This technique will enable us to control drying conditions automatically without sampling the material during the drying process.