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Water contamination caused by dye industries, has caused more and more attention, since most dyes are harmful to human being and environments. Some dyes like methylene blue (MB) and their degradation products have carcinogens and toxic properties so that the removal of dyes from surface water or wastewater is very important. Physical adsorption using solid adsorbents has been a promising method for treating dyes, pigments and other colorant wastewater, owing to its advantages such as operational simplicity, low cost, availability in large amount and ability to treat pollutants in a sufficiently large scale operation. In this study, the sorption of MB from aqueous solution onto composite nanofiber under the influence of temperature has been investigated. It was observed that the amount of MB adsorbed increase with increasing temperature. Thermodynamic parameters data indicated that the MB adsorption process was non-spontaneous and endothermic under the experimental conditions, with the Gibbs free energy (?Go) in the range of 1.721-0.610 kJ mol-1, enthalpy (?Ho) and entropy (?So) of 7.24 kJ mol-1 and 18.52 J mol-1.K-1, respectively and the activation energy was 13.85 kJ mol-1.