[Problem] To provide a soy saponin composition having high bodily absorption characteristics. [Solution] This soyasapogenol composition contains soyasapogenol B and 3-O-D-glucuronopyranosyl soyasapogenol B. The weight ratio (B/A) of the 3-O-D-glucuronopyranosyl soyasapogenol B to the soyasapogenol B is in the range of 0.001-10. The composition can be produced by means of partial decomposition of a sugar chain residue of a soy saponin B group glycoside by means of acid.