Large-diameter cast-in-situ thin-wall tubular pile is a new kind of pile and has been put to wide use in the treatment of soft soil in expressway，dam，embankment，and excavation due to its advantages of cost-saving，fast construction，high quality and less environmental pollution. Usually，the bearing capacity of pile is caused by end-bearing capacity and the frictional resistance between soil and pile. Hence，how to evaluate the outer and inner friction resistances is the key point. So far little progress has been achieved. Whether soil core should be taken into account and how to rectify the end-bearing capacity and friction resistance are still under consideration. This is the main reason that the results deduced from present methods are far away those from the measurement. Based on the load transfer mechanism，five methods from domestic and overseas researches have been analyzed and compared with two case studies. In all these methods，ICP method turns out to be the best one and can be easily used. Its calculation result coincides with the measurement from static loading test，which demonstrates that this method is worthy to be used in practice.