Abstract: Baseed on conodont (243 Genera) evolution characteristics, the conodont evolution is considered to be in agreement with the theory of "punctuated equilibrium" which suggests that macroevolution is dominative in the creature s evolutions. Three prosperous periods of conodont have relation to Palaeomagnetism Reversal. Three failing periods of conodont are influenced by two ice ages, five sea-level changes and rainfalls in the geological history time. The extinction of conodont results from the colony extinction of conodont results from the colony extinction,dry and hot weather,and moutain-making movements etc.