The dissertation is to try to convey some of language recognition and understanding problems as it viewedfrom psychological perspective. It mainly discusses some kinds of theoretical problems that involve in secondlanguage (SL) oral fluency developing from self-willing motivation based on Levelt's speaking model and deBot's SL producing mechanic and according to logical theory that thing's changing lies in its intrinsicmotivation, having discussed the relationship between self-willing motivation and some relevant factors,finally, we draw a conclusion that self-willing motivation is an original motivation both in SL oral fluency andits learning.
