Based on lattice monid, a new type of computational models called Pushdown Lattice-valued Automata is introduced whose inputs are strings of fuzzy subsets of the input alphabet and that corresponds with nature language.

• 在格半群意义下；提出基于词计算的下推格值自动机模型；它的输入是输入字母表的模糊子集；即词串；对应的是具有模糊性的自然语言.