To study the effects of eccentricity and stirrup ratios on bearing capacity and bending ductility of glass fiber composite (GFRP) bars-coral concrete columns under eccentric compression， an eccentric compression test was carried out on 5 coral concrete columns. The effect of eccentricity on bearing capacity, GFRP longitudinal bar strain, concrete strain, vertical displacement and mid-span deflection was investigated and analyzed. Based on the five eccentricities above, 15 coral concrete columns were established and studied by ANSYS. Three stirrup ratios of 0.375% (stirrup spacing of 100, 75 and 50 mm respectively, the same as below), 0.500% and 0.750% were set in each group of eccentricity. Subsequently, the calculation methods of bending ductility and sectional curvature of these specimens were put forward in this paper. The results show that the increase of eccentricty not only decreases the bearing capacity, but reduces the increment speed of GFRP longitudinal bars strain on compression side. The increase of stirrup ratios not only improves the bearing capacity but also reduces the mid-span deflection of specimens.The theoretical calculated values of bearing capacity and bending ductility are in good agreement with the ANSYS simulated results.