This thesis analyzes the factors that affect the dew groove of the baro guitar, and studies with the purpose of enabling the expression of various duties with performers, arrangers, and mechanical players who practice more quickly. The research method is the length, accent, timing, harmony and line, diction, decibel, charge, pitch, factors that can affect periodic grooves and can be played, such as continuous change in tone, Second, current was passed through the experimental groups that produced samples of field change of sound, accent change of practice sound, turn change of net-sup sound, length change of sound over time, and change of sound decibel repeatedly, and then the change of the most groove was called. It was done in a way to select one number. As a result of the study, among the factors most influencing the change of the groove, the meaningful results were change in the length of the note (35.2%), change in the accent of the note (19.3%), change in the turn of the note (17%), and note of the note. Interested in and exploring change (13.6%) increased the change of due groove from note length change to devil by 54% of instrumental music majors directly taught in academia. In other words, the length of the note is the most important factor in expressing the rhythm groove of the bass guitar, and if this element is used well, it can bring good results to the performance, arrangement, and production of the bass guitar. This study has a limitation of not providing samples that combine various genres, styles, and complex elements, and it is predicted and suggested that if complex experiments are conducted in subsequent studies, it will be possible to derive changes in grooves according to many musical environments.