The tax audit of the most important means of tax administration to make sure of the fact that the tax revenue generated, as the role of the auditor is to being a means and not an end aimed at Tax Administration Service in determining the tax base as a scientific organizer maintains the assigned rights and the state along In addition to increasing the level of commitment to the provisions of tax legislation and compliance with, and reflected the importance of ensuring the accuracy of the books came in charge of the accounting items and checks of all aspects to ensure the integrity of cases of fraud and tax evasion. This research seeks to demonstrate the reality of the tax audit in tax circles in Syria and its impact on tax evasion procedures, for the purpose of access to the results, the researcher used descriptive analytical approach was to identify a tool for the study design, were distributed to a sample of income monitors and heads of departments in the districts money Latakia province where consisted of 82 individuals have been selected at random, and after the study and analysis was reached the following conclusions: 1- are doing the planning process for the audit by the tax administration before starting that process, where there is a positive correlation between the tax audit planning relationship and the ability to detect tax evasion. 2- weakness the income observer verification of accounting books and records and to collect sufficient number of evidence and clues procedures, contribute to the reduction of strengthening the credibility of the tax audit, thereby reducing the ability to detect tax evasion. 3- Prepare the income of the final report includes an observer in a clear reference to the extent to which the financial statements with generally accepted accounting principles, and with the tax law materials, as well as the commitment to generally accepted standards, help in the discovery of tax evasion.