With the progress and large-scale application of the drilling and completion technique in horizontal well, the thru-drilling memory logging technology develops rapidly because of its efficiency and security. It has became the main logging technology in horizontal well. New problems and challenges appear in the horizontal well′s field application of the thrudrilling acoustic logging tool because of the acoustic logging tool′s special structure and the special process with which the logging tools go through the hole of the drilling tool into the bottom of the well. In this paper, the phenomenons of large slowness measurement error in the thru-drilling memory acoustic logging tool’s field applications are summarized. In view of these problems, laboratory tests and forward simulation are carried out.Then we know that the reason of measurement error is that the receiving array is not parallel to the wall of the well in the horizontal well and the highly-deviated well.The corresponding optimization schemes of the tool design and the dynamic balancing logging process are proposed,which are based on the principle of leverage. The effect of the optimization schemes is verified through field tests. This paper can provide reference for the research and development of the thru-drilling acoustic logging tool and the analysis of the tool’s measurement influence factors.This paper has important significance for the popularization, application and technological development of the thru-drilling system.