Abstract: In order to improve the market competitiveness of soybean and increase farmers′ income, this paper introduced the characteristics, yield performance and parental pedigree analysis of a new soybean variety Jiadou 33,and defined its variety characteristics and genetic basis.New soybean variety Jiadou 33 was bred by the combination of backcross breeding and molecular design breeding with the female parent of Beifeng 11 and the male parent of Hefeng 55（Beifeng 11×Suinong 4）.It was approved and promoted by the National Crop Variety Certification Committee in 2020.The certification number was Guoshendou 20200009.It got the right of plant new variety protection in 2020.The variety right number was CNA2019002244.This variety showed early maturity, high and stable yield, high quality and good adaptability in regional test, production test and production planting.It had promotion potential and application value.The core female parent Beifeng 11 contained the domestic core ancestor parents, Jinyuan, Silihuang, Baimei, Dabaimei, Xiaolidou 9 and Keshansilijia, also contained the blood and genetic basis of Hefeng 25,the largest variety in the country and the Tokachi-Nagaha, foreign core ancestor parent Japanese varieties.The improved male parent Hefeng 55 not only contained the blood and genetic basis of Beifeng 11,but also contained the blood and genetic basis of the domestic core ancestor Xiaolihuang, Yongfengdou and the direct parent Suinong 4.This variety inherited the excellent pedigree, genes and characters of its parents.It had good genetic basis, excellent seed characteristics and outstanding varieties.It can be used as both an excellent variety for production and utilization and an excellent germplasm resource for improvement and innovation.