We state Markowitz's risk diversification and it's significance.Then, we explain how Markowitz used his theory to present portfolio selection theory. 首先论述了马科维茨的风险分散化理论及其方法论意义，接着说明了马科维茨运用风险分散化思想而提出的资产组合选择理论及其启示。
According to the current situation in China and relevant constraint conditions, a robust portfolio optimization model was redeveloped to adapt to domestic circumstances. 摘要在基于鲁棒的投资组合选择模型的基础上，根据国内实际情况，改进了模型的约束条件，建立了适合国内情况的基于鲁棒优化的投资组合选择模型。
