This essay compared the mood form of topic-noly question in Uighur ču, the mood particle ne (呢) in Beijing dialect and the an (咹) in Chengdu dialect. Combined with the diachronic evolution of modal particles of ne system we draw some conclusions. Compared with ču, ne is not a topic-noly question marker. The functions of ne mainly came from exclamation. The ne of Beijing dialect evolves faster than the an of Chengdu dialect.