Peptides flavor are paid much more attentions nowadays. Most of the recent research are focused on the type and amount of peptides. This article,We reviewed the basic tastes,their flavor formation mechanisms and the regulation of the flavor. Among 5 kinds of the tastes,sweet,bitter and umami are mainly discussed. In addition,flavor peptides can be flavor precursors to participate in Maillard reaction to produce special tastes. The bitter taste is unacceptable while umami is preferred. Further more,we listed the methods of removal bitterness and enhance of umami,which will provide a basis for further research and production of flavor peptides.