This study aims to determine 1) the effect of work discipline and competence on the professionalism of members of the West Sulawesi Regional Police Criminal Investigation Directorate; 2) the influence of work discipline and competence on the performance of members of the West Sulawesi Regional Police Criminal Investigation Directorate; 3) the effect of work discipline and competence on performance through the professionalism of employees at the West Sulawesi Regional Police Criminal Investigation Directorate and 4) knowing the impact of professionalism on performance at the West Sulawesi Regional Police Criminal Research Directorate. This study uses a quantitative approach with a correlational design during the sampling technique with non-probability sampling. The population is relatively small. The total number of respondents is 35 people. This study shows that discipline and competence have a positive and significant influence on employees' professionalism at DitreskrimPolda West Sulawesi. The better the profession and competence, the higher the employee's professionalism will be. 2) Discipline and competence have a positive and significant effect on performance, either directly or indirectly, at the West Sulawesi Regional Police of the Criminal Investigation Unit. It implies that the better the level of discipline and competence, the better the employee's performance. 3) Professionalism has a positive and significant effect on employee performance at DitreskrimPolda West Sulawesi. This implies that the better the professionalism, the better the employee's account.