The aim of this research was to find out the impact of the internal audit standards on sales in Al Ahlia Cement Company - Libya. The research was based on statistical analysis and descriptive analysis (SPSS). The researchers used both the arithmetic mean for standard deviation to describe the axes of the questionnaire and the Pearson correlation coefficient for the relationship between variables and multiple regression analysis for the Impact of internal audit standards on sales. The study concluded that there is Impact and a strong relationship between internal audit standards and sales in Al-Ahlia Cement Company – Libya, and that internal audit staff have sufficient experience in and adhere to internal audit standards. Auditors are honest and independent in their work. The internal audit has a prominent role in the decision-making process by the beneficiaries, and there is a special section of the sales audit in the institution checks the invoices with the goods and records the sales by an independent person. The researchers recommended that the audit opinion be consistent with accepted accounting principles and internal audit standards. They also recommended analyzing sales regularly to avoid fraudulent bills.