The purpose of this work was to focus on the evaluation of the audit procedure within the company TECOPY SA Morocco in order to ensure proper compliance with the procedure, and proposes recommendations to improve the audit procedure. The internship aimed to bring a practical experience in the management of an audit procedure, planning and realization of audit missions as well as to prepare me for the job of an internal auditor. Indeed, this study conducted with the help of an analysis of the different case studies allowed to detect the strong points of the procedure and the points of improvement like the follow-up of the application of the recommendations of the audit report, and the lack of follow-up sheet for the steps of the procedure. For this, we proposed recommendations for the problems identified after evaluation of the procedure, hoping that we have achieved the objectives of the course, which is to improve the audit procedure.