Polygonatum kingianum, commonly known as King Solomon's Seal, is widely used in traditional Chinese medicine (TCM). Historically, it is classified as a tonic herb and is believed to nourish the "yin," support kidney function, and enhance vitality. In TCM, the kidney system is closely associated with the male reproductive system, and herbs said to tonify the kidney are often used to address issues such as low libido, erectile dysfunction, and general fatigue in men. Ancient texts and modern TCM practitioners recommend Polygonatum kingianum for male reproductive health based on these theories and centuries of anecdotal use.

However, direct scientific evidence supporting its efficacy for the male reproductive system is limited. Most available studies focus on its general adaptogenic and anti-inflammatory properties, with some animal studies suggesting potential benefits for metabolic and endocrine functions. There is insufficient high-quality clinical research specifically evaluating its impact on male fertility, hormone levels, or sexual function in humans. The use of Polygonatum kingianum for supporting the male reproductive system is therefore primarily rooted in traditional practice rather than robust scientific validation.