Abstract: Soybean sprout is one type of edible vegetable that is cultivated by sprouting soybeans. Taking Zhonghuang 13 as the research object, a series of treatments were carried out using the 6-BA solution with concentrations of 0, 1, 3, 5, 7, and 9 mg/L under the same environmental conditions. The water distribution in soybean was measured to determine the growth state under the different concentrations of 6-BA during soybean germination. The low-field nuclear magnetic resonance (LF-NMR) and magnetic resonance imaging (MRI) were selected to clarify the effect of 6-BA on the germination of soybean. Three procedures included the LF-NMR, LF-NMR/MRI imaging, and the acquirement of soybean physical, chemical, and morphological indexes. The proton density (PD) image was extracted from the nuclear magnetic signals collected by the Carr-Purcell-Meiboom-Gill (CPMG) spin echo pulse sequence. The results show that the water evolution was visually determined during soybean germination using the LF-NMR PD images. The soybean germination was divided into the imbibition (0-8 h), protrusion (8-24 h), and germination stage (24-60 h). The germination cycle from the soaking to germination varied with the concentration of 6-BA solution in the treatment groups. The germination time of soybean seeds with the 0, 1, and 3 mg/L of 6-BA solution was shorter than that of the rest, where the best was the 3 mg/L concentration. The water content in various phases of soybean was quantitatively characterized by LF-NMR data. According to the relaxation time, the water content of soybean was divided into three kinds: the bound water T21, semi bound water T22, and free water T23. The sub peak was disappeared gradually on the left side of bound water (0.1 ms