The world is material. From minority to majority, from simplex to complex and from low-grade to high-grade the matter is evolving onward. The material evolution is divided into stage evolution and level evolution. The stage evolution has undergone non-biological stage, biological stage and mankind stage. The level evolution has undergone individual level, group level and gather level.In the world of today, not only the non-biological group and biological group gather up the non-biological-biological gather,but also the non-biological group,biological group and mankind group gather up the non-biological-biological-mankind gather and become the compound gather.The motive reasons of evolution are the component action and the component adaptation. The motive power of evolution is the component contradiction. In the mankind stage the direction of material evolution is the non-biological-biological-mankind gather of communism.%世界是物质的。由少数到多数，由简单到复杂，由低级到高级，物质不断地向前进化。物质进化分为阶段进化和层次进化。阶段进化经历了非生物阶段、生物阶段和人类阶段。层次进化经历了个体层次、群体层次和积体层次。当今世界，不仅非生物群体和生物群体积合成物物积体，而且非生物群体、生物群体和人类群体积合成物人积体，成为复合积体。进化的动因是组分作用和组分适应。进化的动力是组分矛盾。人类阶段物质进化的方向是共产主义物人积体。
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