Research conclusions:(1)A new test method，vertical logging，has been presented in this paper. The elastic wave of vertical logging transmitted from the deep pile can be reliably received and the lengths of testing pile can be up to 70 m. (2)This paper has proposed the calculate methods of wave velocity，relative amplitude attenuation and frequency of vertical logging.(3)The new method to judge the integrity of pile has been presented. The signal transmitted from the pile bottom can be detected in the test which includes length more than 50 m of 126 piles and the effect is good. The problem of pile integrity testing to test the long piles，which are longer than 40 m，has been solved to some extent. This method has obtained invention patent. ( 4)The research results have applied in the field of civil engineering.