This study investigates the effect of steel fibre on compressive strength and torsion strength of a beam. If external loads act far away from the vertical plane of bending, the beam is subjected to twisting about its longitudinal axis, known as torsion, in addition to the shearing force and bending moment. The current torsion design approach assumes no interaction between flexure, shear andtorsion.Inthe present work performance of reinforced concrete beams with and without steel fibres were studied subjected to puretorsion.Theexperimental program consists of casting 12 reinforced concrete beams of size 150mm X150 mm and length 2m. Three of themwascastwithout fibres to make a comparative study with the remaining beams; The group of three beam are casted with 5%fibre,10%fibre&15% fibre. The longitudinal reinforcement with 4 # 8 mm diameter and 6 mm stirrups at 150 mm spacing was kept constantforallbeam. The results concluded that the cracking torsional strength and ultimate torsional strength goes on increasing as thepercentageofSteel fiber goes on increasing as the mentioned above. Keywords: Steel Fibres, Aspect ratio, Reinforced Concrete, Beam, Compressive strength, Torsional strength