The flexural strengthening of reinforced concrete beam can be considered with applied externally bonded steel plate or carbon fibre composite. This external plate is bonded to the tension face of the concrete beam experimental study on reinforced concrete strengthening with Carbon Fibre Reinforced Plate (CFRP) has been conducted to estimate the effectiveness of using CFRP on the concrete structure as external reinforcement. Two beams were tested in this study to test the flexural strength effect of externally bonded CFRP composite in the reinforced concrete beam. Two beams were tested in this study to test the flexural strength effect of externally bonded CFRP composite in the reinforced concrete beam. One of the beams is a control beam and other beam is the concrete beam without steel bar and laminated CFRP to the bottom of the beam with epoxy. The dimension of the beams is 150x250 mm with length 2000 mm. All beams were tested using two-point loading to get pure bending in the middle span. The result of the experimental research showed that in spite of using laminated CFRP on the concrete beam had increased the cracking moment, but laminated CFRP on the concrete beams as external reinforcement without reinforcing steel bar has no significant effect on the behaviour of beams. Premature failure of externally bonded CFRP plates had occurred before the ultimate flexural capacity of the strengthened section is achieved.