Knife-roach seed, or knife-roach seed, is the traditional Chinese medicine cuttlebone, with the effect of fixing semen and shrinking urine (consolidating semen and urine, preventing random leakage), tonifying the kidney and helping the yang, which can be used for spermatorrhea and slippery spermatozoa, frequent urination and urination, turbid urine (urine is turbid like white slurry), impotence, and other diseases. Cuttlebone is the dried egg sheath of praying mantis such as big knife mantis, small knife mantis and giant axe mantis of Mantis family, which is sweet, salty and flat in nature, and belongs to the liver and kidney meridians, and it is an important medicine for treating many diseases such as man’s deficiencies, impotence with kidney deficiency, spermatorrhea in dream, and urinary emission. As cuttlebone has a better role in helping kidney yang and fixing kidney essence, it is not suitable for those who suffer from spermatorrhea caused by yin deficiency (deficiency of yin and essence in the body and the appearance of hyperactive deficiency fire), and frequent urination caused by heat in the bladder to avoid aggravating the symptoms of the disease. Chinese medicine needs to be used by a Chinese medicine practitioner after diagnosis, avoid self-medication, so as not to cause adverse reactions!