Effect of exogenous growth regulators on structure indices of grain yield and its quality of white lupin varieties Dega and Alyi parus are presented. Comparative analysis of action of chemicals Circon, Epin-extra, Gibberellin, Zavyaz on implementation of pod forming potential, plant productivity, number of pods, seeds per a plant and 1000 seed weight is given. The tested varieties differed in response degree to action of the chemicals. It’s established that the tested chemicals increased the yield of var. Dega by 6.0–7.2% (average during research years). The average increasing of the yield of var. Alyi parus made 20.6–22.0%. In addition it was noticed that the tested chemicals increased the seed size of main stem. Crude protein content in seeds of the var. Dega was 34.7–37.2%; of the var. Alyi parus it was 36.9–37.8%. After the treatment with these chemicals the tendency to increasing of this parameter has been no-ticed. Growth regulators have positive action on elements of white lupin yield structure. The plant productivity increasing made 5.0–10.0% after treatment of growth regulators, after double treatment it made 17.0–28.0%. Seed number growth took place also. In case of double treatment with Epin-extra this index of var. Alyi parus was the highest and made 17.3% compared to the standard and to the treatment with Zavyaz — 22.8%.