There are several aspects of inconvenience and inappropriateness in dealings and attitudes of human beings with animals. There are also lots of questionings concerning the good appropriate conditions for animals' seizure or being locked in cages or in enclosed environments; and what are the guiding lines for designing management systems for animals; taking into consideration the ecological and local impacts of the management systems of animals within limits of not violating the zoological field. This study purpose is to activate the environmental management systems in the zoo of Giza, defining also aspects of shortness in environmental planning for improving the environmental performance and assist in decision-making. The study hypotheses demonstrate that: There is no significant correlation between activation of the administrative systems in the zoo of Giza for achieving environmental management. There is no correlation between applying the environmental management system and improvement of performance level, and improving the control supervision level. The study is concerned with evaluating the current environmental performance of the environmental management system, defining as well the shortness aspects exist in applying the environmental management system. The study use the inductive method for preparing the theoretical framework of research, inducing as possible as can the review of literatures, Arabic and foreign references specialized in this domain of environmental management systems in zoos. The study uses the descriptive (qualitative)-analytical method through using an investigation form as the main tool of research, to be administered on workers in the Giza Zoo (224). The study limits on spatial limits embodied in the Giza Zoo and its employees (workers-administrators –veterinaries). Results indicate the following: There is a correlation between applying the environmental management systems and improving performance level in the zoo. There is a correlation between applying the environmental management systems, the supreme administration, planning, and decision-making. There is a significant correlation between applying the environmental management systems and improving the control supervision level.