Based on the result of pile pressing test,pile pulling test and axial force test,we probe into the distribution law of shaft friction on compressive and tensile load of steel tube piles in deep old deposited soil and draw the conclusions as follows:The mean shaft friction of steel tube pile under compressive load in deep old deposited soil area can reach 76.79 MPa and is about 27.5%～30.6% higher than ordinary clay.The shaft friction of steel tube pile under tensile load can reach 42.4～52.8 MPa.The mean shaft friction of steel tube pile under tensile load is 0.84 times of its under compressive load and about 5% higher than ordinary clay.Along with the increase of penetration and soil thickness,the shaft friction of steel tube pile under compressive and tensile load changes slowly.The research result provides an instruction to the theoretical research and engineering practice of steel tube piles in old deposited soil.