Abstract - Due to the lack of knowledge and experiences in the criteria for the re-thinking of Smart Materials within the architecture professional practice in Egypt and down to the environmental problems in the contemporary architecture, especially in the housing projects that can't fulfill the requirements of the user and the needs of the new life (comfort, economic housing, eco-housing .etc.), and due to the climate change ( the increase of temperature for many causes in Egypt), all these prompt the important calls to focus on the design solutions and experiences aiming and  responding to the natural climate control, and passive measures in architectural design derived from the Compatible Technology For Smart Materials and the characteristics of new methods in which is presenting on one hand, 3 different types of materials : 1 – Property Changing Materials, Which Change The Properties Of Mechanical And Electrical Properties As A Reaction Of  Change In External Factors 2 – Energy Exchanging Materials (Reversible), Which Changes The Form Under The Influence Of Electric Fields Or Magnetism 3 – Energy Exchanging Materials , Which Transforms Energy From Form To Energy Produced In Another Form, In Addition To The Presentation Of Some Applications Of Smart Materials In Various Parts Of The Modern Intelligent Building, and on the other hand, dealing With Buildings In The Areas Of Hot Climate (Desert) By Mentioning The Characteristics Of Hot Climate And The Problems Of Buildings In The Hot And Dry Areas And The Needs Of Building Systems In These Areas And The Presentation Of The Applications Of Smart Materials That Can Meet These Needs, While The Third Part Is To  Present And Analysis Global Examples, Regional And Local Use Of Compatible Smart Materials Technology In Their Buildings To Adapt To The External Environment In Addition To Reducing The Energy Consumed In The Building. So the study tackles the possibility to create a practical understanding and resource-based knowledge on developing sustainable built environment.