A peanut mutant population was constructed by treating seeds of peanut "Yuanza9102" with 60Coy rays and EMS, respectively.In the M3 generation there were more than 10 mutants of leaf, stalk, and seed obtained.In addition, the mutants of protein and oil contents were identified; there were 47 mutants with an increase of more than 5％ of protein content and five mutants with more than 5％ of total protein and oil content compared with the control.