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Soybean is an important plant because of its role as a source of vegetable protein and as an industrial raw material. National soybean production is still low so that every year imports need to be large enough to meet national needs. National soybean production in 2014 amounted to 892.60 thousand tons while soybean production in Java reached 566.30 thousand tons whereas 329,461 tons/year came from East Java or 42.43% with productivity ranging from 1.3-1.5 tons/hectare. National soybean productivity has only reached 1.2 tons per hectare to date. National soybean needs to reach 2.4 million tons each year while farmers- production is about 850 thousand tons or about 65% of the needs. As the result, the remaining 1.55 million tons is imported from America. Candidates for new superior varieties, which are G-1, G-2, G-3, G-4, G-5, UNEJ-1 and UNEJ-2 have a potential yield of 2.5 tons/hectare and are of early maturity (pod mature age at 73-76 days) and have resistance to the main disease of soybeans, leaf rust. It is expected that these lines can have a stake in achieving sustainable food security. The study was conducted in April to November 2018 in five soybean production centrals in East Java, namely the experimental plant Research Institute for Beans and Tubers (BALITKABI) in Genteng-Banyuwangi, Muneng-Probolinggo, Ngale-Ngawi, Kendalpayak-Malang, as well as Experimental Garden of Jember State Polytechnic. The experimental design used for each location was randomized block design with ten treatments (genotypes) and three replications. The size of each plot (unit) of the experiment was 2.8 m x 4.5 m or around 12.6 m2 (used by the National Soybean Consortium). The distance between rows was 40 cm and inside the rows was 15 cm. Each hole was filled with three seeds, and after growing, two healthy plants were remained. To find out the interaction between the genotypes and the environment, analysis with a randomized group design was used. Next, the stability was analysis by the Eberhart and Russel method. The result of stability analysis showed that genotypes G-1, G-2, G-3, G-4, G-5, and UNEJ-1 were stabile in five locations, whereas UNEJ-2, Malabar and Ringgit turned out to be unstable.