At present, driven precast piles and piles of concrete cast in place with mud protecting holes’ walls are extensively used in Yancheng area. From pole’s technology and conditions of soil, this paper will study influences of the cease time when two types of piles have been in place, on the ultimate bearing capacity of single pile for the saturated soft clay of Yancheng area. Moreover, how to determine the intermittent time of load test is also discussed.