Through the current study, through its sections, the researcher aims to verify the relationship and effect of using the art of etiquette as an independent variable in increasing the quality of human resources. The study began with a central problem represented by the question: What role does the use of the art of etiquette play for individuals working in increasing the quality of services for human resources working in restaurants? The research sample. Several measures were adopted to measure the study's variables, some of which were ready and some appropriate to the nature of the variable. The independent variable included the art of etiquette, the importance of it, not its triviality. The second independent variable was the quality of services, and the variables' interaction formed the study's general framework. We also discussed in the study, from its applied aspect, a group of restaurants. Holy Karbala, as several main and subsidiary hypotheses emerged. To answer the questions, achieve the research goal, and test the validity of the study hypotheses, the descriptive analytical approach was adopted as a fundamental approach to the research, and the questionnaire was used as an essential tool in all data and information for the study, and to analyze and treat the data statistically. The standard distribution test and confirmatory factor analysis were adopted as a structural test to measure the validity of the approved measures and a set of descriptive statistics. (Pearson simple correlation coefficient) to determine simple and multiple influence relationships between variables. Statistical programs (SPSS V.23: Amos V.23) were used in it, as the study population represented the surveyed restaurants, the study sample, which numbered (50) in five restaurants in the city of Holy Karbala, in addition to some personal interviews, and several conclusions were reached through the study, the most prominent of which was (the culture of etiquette left no room for discussion, as etiquette is an intertwined art and has many types of applications).