This study examines measuring methods of drag coefficient, lift coefficient and equivalent roughness that are necessary for mechanical design of revetment blocks set on river banks. The setting method of blocks and the influence of the Reynolds number on drag force and lift force are examined by checking the experimental results. A standard testing method which is capable to estimate the characteristics of blocks, taking the error of mesurment into account and the treatment of fluctuation of hydraulic force on the block are shown in this paper.