The soybean [Glycine max (L.) Merr.] cultivar ‘Sehwa’ (Grant No. 10017) was developed at Kyungpook National University. It was derived from a cross between ‘Uram’ and an F₁ plant from a cross between the salt-sensitive soybean ‘Hutcheson’ (G. max) and the salt-tolerant wild soybean ‘PI483463’ (G. soja). In salt tolerance bio-assays, ‘Sehwa’ demonstrated high tolerance, with a low leaf scorch score (LSS) of 1.3 under 100 mM NaCl treatment. Contrastingly, ‘Hutcheson’ exhibited severe chlorosis and necrosis (LSS 3.7). Under salt stress, ‘Sehwa’ accumulated markedly fewer toxic ions than did Hutcheson. Compared with that in the control, the Na⁺ content increased by 598% in ‘Sehwa’, which was significantly lower than that in ‘Hutcheson’ (1,503%). Notably, in ‘Sehwa’, the Na⁺/K⁺ ratio increased by 529%, whereas ‘Hutcheson’ revealed a 1,365% increase. In the 2020 yield trial, ‘Sehwa’ exhibited an erect growth habit with an average plant height of 69.0 cm, which was considerably taller than the check cultivar ‘Pungsannamul’ (61.0 cm). Despite being small-seeded cultivar (100-seed weight: 10.0 g) compared with ‘Pungsannamul’ (13.5 g), it shows a reasonable yield potential of 2.3 t/ha, comparable to the 2.8 t/ha of the ‘Pungsannamul’. Therefore, ‘Sehwa’ is a promising soybean cultivar for reclaimed land owing to its salt tolerance and favorable agronomic traits.