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The use of shading measures is not only a necessary means of energy-saving design of glass curtain wall buildings, but also a necessary means of higher standard glass curtain wall architectural design. Although glass curtain wall buildings using shading measures can play a good role in energy saving, but the domestic at this stage generally do not pay enough attention to this. Many countries have made use of the external shading system as an active element of the façade, and even call it a double-layer façade form: one layer is the façade of the building itself, and the other layer is a dynamic shading state of the façade form. This kind of dynamic building image is not only the need of building façade fashion, but also a new modern architectural form produced by using modern ecological and environmental protection to solve human demand for building energy saving and enjoying nature.

We should conduct sufficient research on domestic and foreign architectural shading environmental protection, such as research on the applicability shading construction scheme, research on the performance coefficient of shading construction, development of energy-saving software for applicable shading systems and evaluation of the artistry of shading construction. In the study of new foreign environmental protection at the same time, domestic enterprises should be able to comprehensively study the development of shading systems related to environmental protection and the development of complementary products to truly make the domestic glass curtain wall shading system to keep pace with the times.

Energy saving and environmental protection has become the general trend of today's world building development. An important way of building energy saving is to heat insulation and thermal insulation of the external envelope, especially in the southern cities of China, most of the buildings with glass curtain walls as the external envelope, the important measure is to shade the glass curtain wall design. Setting shading system on the glass curtain wall can minimize the direct sunlight, thus avoiding indoor overheating, which is one of the main measures to prevent heat in the building. The analysis of energy consumption of modern high-rise building envelope can lead to some conclusions as follows.

The window opening rate of the facade is an important factor in the energy saving of the facade, and reducing the window opening rate is an important means of energy saving, but reducing the window opening rate also ensures proper natural lighting and also dispenses with the psychological sense of closure. However, for glass curtain walls pursuing the effect of permeability, energy saving can only be achieved by reducing the window opening area and strengthening the thermal insulation design of opaque areas.

External shading and glass shading is the second important factor of energy saving for facades, as can be seen from the application examples at home and abroad, traditional external shading forms are divided into four types: horizontal shading, vertical shading, integrated shading and baffle shading. What form is used is mainly determined according to the orientation of the exterior windows of the building, but these forms of shading have certain limitations in terms of shape and function. At present, more and more new types of adjustable external shading have emerged in the construction market. Adjustable external shading can be put down or put up according to different needs, which can adjust the indoor light, and can also flexibly solve the contradiction between the building's winter and summer sun demand, and the appearance is fashionable and beautiful, easy to use, and also has a variety of functions such as noise reduction, dust reduction and pollution prevention.

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