Abstract: This paper examines the the holistic heterotopia and fluctuation phenomena of the sonic wave curves. The curves are obtained through sonic contrastive tests in single bore. Some contrasts are made among the curves integrated with the actually sonic test data. On the basis of contrasts, concrete manifestation and characteristic feature of the abnormity are presented. Then the mainly reason for this abnormity is analyzed. The result demonstrates that the sonic test abnormity is mainly caused by substandard test operation. In particular, the holistic heterotopia associated with the sonic wave curves was caused by the erroneous sampling. It belongs to linear systematic error, and can be dealt with increasing the length of contrast rockmass units, which is in order to increase the overlap ration of sampling mass. But the holistic uneven fluctuation in the sonic wave curves is mainly related to the purity of the water that was used as the coupling reagent in sonic test. It belongs to nonlinear systematic error. So this abnormity is difficult to be remedied. This study offers some references to avoid or remove the abnormity occurring in the contrast sonic test.