Glass Fiber Reinforced Polymer (GFRP) was widely used in civil engineering considering its advantages of lightweight, high tensile strength, corrosion resistance and fatigue resistance, etc. GFRP composite pile is a new type of pile reinforced by GFRP upon RC pile to enhance its bending resistance. The lateral displacement and bending moment of the RC pile and GFRP composite pile were obtained and analyzed via the model test. The lateral bearing capacity of both two pile types were compared and analyzed. The GFRP composite pile under lateral loadings was simulated by the FEA software ABAQUS. The experimental results are in good agreement with the numerical simulation results, both shouing that the bending moment distribution of GFRP composite pile was consistent with the RC pile, and the maximum bending moment occurred nearby the depth of 1/4 to 1/3 pile length. However, the horizontal load-bearing capacity of GFRP composite pile was much greater. The elastic modulus and lateral ultimate capacity of GFRP composite pile covered with a layer of GFRP unidirectional fabric canbe improved to a certain extent.