Laboratory experiments were performed on the sediment transport on backshore, which was caused by solitary waves as well as cyclic waves. Measurements were conducted for overtopped volume of water and sand, temporal variations of horizontal water particle velocities, surface elevations and suspended sediment concentration. Meyer-Peter-Muller's formula and Lane-Kalinske's formula were found to be consistent with the sand transport rate caused by long waves but inconsistent for solitary wave. Sediment suspension and convection on the foreshore due to breaking was found to be important to estimate the sand transport due to solitary wave. The saturation of suspended sand concentration was observed when the height of the incident solitary wave exceeded 7cm.
