Tax system's role as part of the established environmental policy is almost non-existent in Egypt, where tax measures applied only to grant an exemption for machines and new equipment imported from the customs tax or allowing in some cases to deduct depreciation of high value of new machinery and equipment from a bowl of income tax on certain conditions and restrictions . It did not impose any tax rate of tax on high-polluting products to the environment or to grant any tax advantages on environment-friendly products. The research has addressed the role of tax exemptions in the policy of preserving the environment, Can the policy of tax incentives positive preservation of the environment, as well as to identify the role of tax incentives in the negative environmental conservation. The most important results: 1. The tax legislation has an important role in protecting the environment. 2. Accelerated depreciation of the best tax incentives that should be on the tax legislator introduced in the fight against pollution. 3. The tax exemption exact duration of certain tax incentives more effective. The main recommendations of the research: 1. activate and rationalization of tax incentives policy in the tax laws to take into account the environmental dimension is desirable. 2. oblige industrial facilities attach a certified environmental report from the EEAA with tax approval.