The final set,bearing stratum and ultimate pile capacity of the driven pile are critical for the quality control of piling works.Carrying out the whole highstrain dynamic testing to study the driving behavior of open steel pipe piles with different wall thickness in coralreef limestone,including significant parameters such as the pile capacity,set,driving stress and energy transfer in pile driving and analyzing the characteristics of 480 driven piles,we draw the conclusion as follows:the bearing stratum shall be highly weathered coralreef limestone and the final criterion shall be controlled by the final set and embedment depth of piles in the highly weathered rock.