Abstract: Test studies of refraction survey method and instantaneous mechanicalimpedance method are proceed to large model pile set on surface. The test results indicatestEat the time period wave type of refraction survey method is obvious and the effect is better.And the frequency range transmit function curve character is no reflect, and the effect is notgood. The select of the test method can not be ignored. The better dynamic test results can beobtained by comprehensively applied the time period method and the frequency range method.