中文摘要：

通过研究一类解析的Toeplitz算子，引出单叶算子的概念，并刻画了它的（（U＋H）轨道闭包，从而给出这类算子集合的（（U＋H）不变量．最后得到关于这类算子的Putnam定理．

英文摘要：

A notion referring to the univalent operator was proposed via considering a class of the analytic Toeplitz operators. Then we characterized the （U＋H）-orbit closure of univalent operator and gave its （（U＋H）-invariant. In the end we got Putnam theorem of this kind of operators.