In this study, Adzuki bean varieties: 012-27, Tang Hong 2010-23, JHPX02, and Tang Hong 2010-12were used as testing materials to show the effects of humic acid on the growth and development and yield of adzuki beans at the growth stages. The results showed that the application of 15g/m² humic acid can increase leaf area, effectively enhance the root vigor and growth of adzuki bean, and increase the yield. The fresh weight, dry weight, mature pods of individual plants of the four tested varieties under humic acid treatment were significantly higher than those treated without humic acid, reaching 40.55/101.45/86.00/85.73 g, respectively; 8.91/24.45/22.42/19.86 g, respectively; 53/61/48/46 pods per plant, respectively; 62.26/77.26/58.44/53.76 kg/667 m², respectively, among which the humic acid application of 15 g/m² had the most significant effect on growth promotion, of which Tang Hong 2010-23 had the highest yield of 77.26 kg/667 m². This study revealed the their effects on the adzuki bean yield, the related agronomic traits, and physiological characteristics through the study on the effects of humic acid using 4 adzuki bean varieties, and provided a theoretical basis for the green and efficient production of adzuki bean in Liaoning province.