The differentce of protein subunits of 112 faba bean was analyzed by SDS-PAGE,in order to find out specific protein subunits.The result showed that:(1)the effective number of albumin and globulin alleles was 1.750 0±0.452 3,1.545 5±0.522 2,and the percentages of polymorphic subunit was 75.00%,54.55%,respectively.(2)It was difference between the albumin and globulin subunit numbers in different genotypes,containing 12 albumin subunits and 10 globulin subunits thereof the specific albumin subunits were 116 kD,96 kD,45 kD and specific globulin subunits are 58 kD,35 kD.42 varieties contain specific albumin subunit,21 varieties contain specific globulin subunit.(3)The lack subunits were 97 kD,63 kD of albumin and 97 kD,56 kD,47 kD of globulin.19 varieties were found with based albumin subunit lack and 21 varieties with globulin subunit lack.In summary,both albumin and globulin subunit numbers are different among different faba bean genotypes.Besides the based subunits,some have specific subunits and some have lack subunit.