In order to enrich the domestic industry’s research on the engineering characteristics of super-long steel pipe pile under coral reef limestone geology,combining with the pile foundation construction of a hydraulic project in East Africa,we analyze the rules of pile sinking of steel pipe pile under this geological condition.The 1.2 m-diameter steel pipe piles are used in this project.The anchor pile method of static load test is used for three piles,with 12 mm,18 mm and 24 mm wall thickness respectively and the maximum pile length of 71.2 m.The pile bearing layer is coral reef limestone and has a maximum into the bearing layer of 31.8 m.Through the low-temperature sensitive fiber grating sensor embedded in the pile,the engineering characteristics of the coral reef limestone under different pile top loads are revealed by the pile-sinking rule and static load test,It provides reference for the design and theoretical research of steel pipe piles under coral reef limestone.