Social space is a social product. A relative surplus of space products will give rise to econom-ic crisis. The triad of social space comprises spatial practice,representations of space and representa-tional space. However,the third realm or component of the triad is not the result of simply combining the first two,but an open alternative based on deconstructing and reconstructing their assumed integrity. Social space has a complicated system of symbols,the triad of which is similar to that of semiotics:the signifier,signified and signification. The body,as the subject of the production of social space,is where the production starts. An alienated body is controlled by the triad of state power,code and knowl-edge. Only in differential space of socialism can the body be liberated completely. At present,the glob-al economic crisis is essentially the crisis of urbanization,and China is in its initial phase.%社会空间是一种社会性的产品，空间产品相对过剩会产生经济危机。空间实践、空间表述、表述空间构成社会空间的三元辩证组合或者三元辩证法，第三项不是前两项的简单叠加，而是对它们所假定的完整性进行拆解和重构之后，形成的一种开放的选择项。社会空间包含着复杂的符号体系，空间三元组合类似于符号学的能指、所指、意指三项组合。身体是社会空间的生产主体，社会空间的生产从身体开始，处于异化状态的身体受权力、符号、知识三位一体控制。只有生产出社会主义差异空间，身体才能获得完全解放。当前全球经济危机的实质是城市化危机，中国正处于城市化危机的起始阶段。
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