Abstract: The research made by predecessors in the low cycle fatigue of powder metallurgy high temperature alloys was refered to, including the crack initiation and propagation based on the defects, the mechanism and effect of peening; several life model were summarized, the modified Mitchell method was the most suitable method for powder metallurgy high temperature alloys, the conclusion was made that the research about the low cycle fatigue life model and shot peening strengthening should be enhanced.