There is a multitude of concerns about the impact of genetically modified crops (GMC’s) on the environment. The main important enviromental assessment of GM crops are putative invasiveness, vertical and/or horizontal gene flow, other ecological mechanisms, effects on biodiversity and the impact of presence of GM material in other products. These invetigations are all highly interdisciplinary and complex issues. Deposite the potential benefits of this new technology to improve the reliability and quality of the world food supply, public and scientific concerns have been raised about the environmental and food safety of Gm crops. In these paper same of most important problems related to the GM crops into the environment are inspect such as; plant protection, ecological effects of HRCs, gene flow, biodiversity, stress, effects on the soil ecosystem etc. Not enough scientific research has been done to evaluate the environmental and health risks of GMC’s, an unfortunate trend. Most scientists feel that such knowledge is crucial to have before biotechnological innovations are implemented. There is a clear need to further assess the severity, magnitude and scope of risks associated with the massive field deployment of transgenic crops. The putative impacts identified for GMC’s are very similar to the impacts of new cultivars derived from traditional breeding. When assessing GMC’s relative to existing cultivars, the increased knowledge base underpinning the development of GMC’s will provide greater confidence in the assurances plants science can give on the risks of releasing such crops.