Wild Water Calamus should refer to wild Water Calamus, its efficacy has the effect of resolving dampness and opening the stomach (by removing dampness to normalize gastrointestinal function), opening the orifices and opening the phlegm, and killing worms and relieving itching, and it can be used to cure the conditions of delirium tremens and epilepsy, epilepsy, and forgetfulness and insomnia. Wild Acorus calamus is the rhizome of Acorus calamus in the family of Tennessee, its medicinal properties are warm, pungent and bitter, its efficacy is to dissolve phlegm and open the orifices (opening the orifices of the heart and restoring the sanity by dispelling phlegmatic evils), removing phlegm and strengthening the stomach, killing insects and relieving itching, and it can be used in the treatment of phlegmatic syncope and stupor, stroke, epilepsy, palpitation and forgetfulness, tinnitus and deafness, rheumatism and pain, and eczema. Attention to yin deficiency and hyperactivity (deficiency of yin fluid, hyperactivity of yang), excessive sweating, seminal slippery people should be cautious, its adverse effects are not clear. Do not use wild water caltrop indiscriminately, so as not to affect the condition, the use of medication must be guided by a professional Chinese medicine practitioner.