In industrial textile pretreatment and finishing processes, mass transfer and mass traort are often rate-limiting. As a result, these processes require a relatively long residence time, large amounts of water and chemical materials, and are also energy-consuming. Ultrasound power is a promising technique for accelerating mass traort in textile materials. The collapse of acoustic bubbles in the boundary layer between the fabric and the bulk fluid, gives rise to convective mass transfer in the intra-yarn pores. Using KMnO 4 as a powerful oxidizing agent, for simultaneous baking, desizing and bleaching of loomstate cotton fabrics, has drawn a lot of attentions. The main purpose of this project is applying ultrasonic power in bleaching using KMnO 4 in order to reduce energy consumption, so, three different methods were used. In the first method, ultrasonic power was applied for first step and the second phase was done using oxalic acid under optimum conditions as the same as conventional method. In the second method, bleaching using KMnO 4 was done similar to regular method and ultrasonic power was utilized in second stage. The effect of temperature, time and concentration of potassium permanganate and oxalic acid on the chemical and physical properties of bleached fabric were investigated in both methods. Finally according to optimum condition of previous methods, in third method, ultrasonic was used in both steps. Eventually, whiteness index, tensile strength, residual size, wet ability, weight loss and FTIR of each sample that was treated under optimal condition in each of these three methods are compared to the sample which was treated in conventional method. Since, most of the oxidizing agents have antibacterial nature; also, the antibacterial properties of potassium permanganate on the cotton samples were analyzed. It was found that by using ultrasound power in lower temperature, by increasing the temperature, concentration of oxalic acid, KMnO 4 and treatment time, more whiteness, weight reduction and shrinkage loss were obtained. However, tensile strength decreased. But because of lower temperature, strength loss is less than what happens in conventional method, however whiteness and removal size is similar to regular method. Ultrasonic application in second method, cause better removal size and whiteness rather than conventional methods. Because of reduction of the prices of electronical components, less loss strength and better removal size rather than conventional method (approximately 6-10%), desirable whiteness and about 35% thermal energy efficiency in each phase, ultrasonic power can be used as an alternative method for simultaneous baking, desizing and bleaching of loomstate cotton fabric.