In this paper, we studied the effects of consultants' verbal and non-verbal communication on client trust, organizational characteristics, and consulting performance of recipient companies in the consulting industry, an intangible business dealing with people. This study was revised to meet the purpose of this study through preliminary verification from September 30 to October 14, 2019 for employees with experience in consulting. Through the online questionnaire, the revised questionnaire was collected from 1,500 people from January 13 to February 1, 2020, and 289 copies were collected through random sampling. Statistical programs SPSS 22.0 and AMOS 22.0 were used for empirical analysis of the collected questionnaires. The analyzed results of this study are summarized below. First, looking at the relationship between the linguistic communication of the consultant, client trust, and organizational characteristics, it was found that the linguistic communication of the consultant had a significant positive effect on client trust and organizational trust. Second, looking at the relationship between the consultant's linguistic communication and consulting performance, it was found that the consultant's linguistic communication did not significantly affect the consulting performance. However, this resulted in a complete mediating effect between client trust and client organizational characteristics, which had a significant effect on consulting performance. In other words, although the linguistic communication of the consultant does not independently affect the consulting performance, it can be considered that there are indirect effects on the consulting performance if the parameters of client trust and client organizational characteristics exist. Third, among the non-verbal communication of consultants, body language, spatial language, auditory language, and appearance language all have a significant positive effect on client trust and organizational characteristics. Fourth, among the non-verbal communication of consultants, body language, spatial language, auditory language, and appearance language were found to have a significant positive effect on consulting performance. This is contrary to the fact that the linguistic communication of the consultant does not have a significant influence on the consulting performance, and as a result of research by Woo Ryong Kim (2014), it acted as an auxiliary role that non-verbal communication delivers more effectively than verbal communication. Is shown. Through the results of this study, the linguistic and non-verbal communication of consultants is an important factor in positively leading the consulting performance, and it seems necessary to strengthen the intensive training on communication skills internally in consulting companies. In addition, based on the results of this study, if the importance of linguistic and non-verbal communication of consultants is recognized and used in training to strengthen consultants' competency, it will be an opportunity to increase the awareness and consulting performance of domestic consulting.