算符优先分析方法是根据算符之间的优先关系而设计的一种自底向上的语法分析方法。算符优先分析的基本思想是只规定算符之间的优先关系，也就是只考虑终结符之间的优先关系。由于算符优先分析不考虑非终结符之间的优先关系，在归约过程中只要找到可归约串就归约，并不考虑归约到哪个非终结符，因而算符优先归约不是规范归约。-Operator precedence analysis is based on the priority relationship between the operator is designed as a bottom-up parsing methods. The basic idea of operator precedence analysis is provided only to give priority to relations between the operator, that is only considered a priority relationship between the terminator. As the operator does not consider the priority of priorities between nonterminal relationship, in the reduction process of reduction as long as the string could be found on the reduction, which does not consider the reduction to a nonterminal, which reduction is not a standard operator priorities reduction.