Abstract: Abstract: The greenhouse is a kind of agriculture production building facilities. It should bear all kinds of loads, including the loads induced by gravity, improper operation, and live loads, such as wind load and snow load. At the present time, a large number of research studies on greenhouse have focused on illumination, temperature, gas and humidity, whereas there are few researches published on greenhouse structures, especially on greenhouse structure design theory taking the supporting role of covering materials into account. It is necessary to carry out the research on space robustness of greenhouse structure by bringing the design work condition into correspondence with the actual work condition. Then three types of greenhouse including Huabei-type greenhouse, venlo greenhouse and sunlight greenhouse, were chosen to be prototypes, and the numerical simulations on the overall collapse process of single hinged frame, whole frame structure, whole frame structure with plate glass covering, whole frame structure with PC board covering, and whole frame structure with membrane covering under windstorm and snowstorm were carried out by using finite element analysis software ANSYS with consideration of geometric imperfections, material nonlinearity and geometric large deformation. The collapse modes of greenhouse structure and the corresponding load-displacement curves were obtained. The stable bearing capacity and the space robustness of greenhouse structures were analyzed under three typical weather disasters. At the same time their ultimate load coefficient and stable bearing capacity coefficient were provided. The results showed that buckling failure mode happens easily for greenhouse structure under vertical snow load, the whole structure bearing capacity was higher for greenhouse structure under horizontal wind load considering skin effect of covering material. It was due to more compression-flexure members existing in greenhouse structure under vertical snow load than that under horizontal wind load. And the larger slenderness ratio of these members leaded to unstability. Therefore snow disaster resistance of greenhose was lower than wind disaster resistance. When the control load was wind load, the stable bearing capacities of all whole frame structures for sunlight greenhouse were larger than that of single hinged frame, the increase of the whole frame structure and the whole frame structure with membrane covering was about 20%. And the increase of the whole frame structures with plate glass and PC board was about 50%. The enhancing effect of skin effect of covering material on stable bearing capacity of only sunlight greenhouse could be considered when control load was wind load. When the control load was snow load, the stable bearing capacities of all whole frame structures for Huabei-type greenhouse and venlo greenhouse were both larger than that of corresponding single hinged frames, and increaseed 1-2 times and 1-4 times, respectively. Therefore, the enhancing effect of skin effect of covering material on stable bearing capacity of both Huabei-type greenhouse and venlo greenhouse could be considered when control load was snow load. Plate glass covering was the most favorable to the stable bearing capacity of greenhouse structure, and the increase falls in between 20%-280%, PC board was the second and the increased falls in between 20%-240%. Membrane was the last and the increased falls in between 0-0%. The studay was useful to the windstorm and snowstorm resistant design of greenhouse.