This work analyses the effect of various alkali and softness treatments on the physical, chemical and mechanical properties of the banana and banana: cotton fibres blended yarns and fabrics. Fibres were scoured, bleached and mercerized by different concentrations of NaOH, H2O2, Na2 CO3 and softened with Aloe Vera, castor oil, cotton seed oil and soap. The mechanical characterization indicated that the single yarn strength, tensile strength, tear strength and torsion rigidity became decreased by increasing concentration of the NaOH, H2O2, Na2 CO3. The adequate (spinnability) fineness (5.8 tex) of the banana fibres have been achieved with Na OH, H2 O2 and Na2 CO3 combined treatments. The fastness properties of the banana: cotton blended fabrics show equal to the 100 % cotton fabrics in dry and wet conditions.