在这篇文章中，我们主要研究奇异方程的正周期解问题。

In this paper, we study mainly positive periodic solution to singular equations.

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采用矩阵迭代法可以直接迭代计算特征向量导数，避免了对奇异灵敏度方程的求解。

Using matrix iteration methods, the eigenvector derivatives can be iterated directly, solving the singular sensitivity equation can be avoided.

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本文得到了一类带奇异低阶项椭圆方程的一个正则性结果。

A regularity result of a class of elliptic equations with singular lower term is obtained.

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