Fire is a common saying, in traditional Chinese medicine is a “heat” performance; taking four things soup usually do not appear heat, but some of the yin deficiency of the body of the crowd may be more prone to heat after long-term use. In the formula of Four Substance Soup, Radix Rehmanniae Praeparata is the principal medicine, which is mildly warm and sweet in nature, and is good at nourishing yin and blood and is an important medicine for nourishing blood; Radix Angelicae Sinensis is sweet, pungent, warm, and nourishes blood and activates menstruation, and is an important medicine for nourishing blood and regulating menstruation. This formula can be used to treat heart palpitations, insomnia, bloodlessness, scanty menstruation and menorrhagia in women due to deficiency of blood in the camp. The medicinal property of Four Substances Soup is on the warm side, which may aggravate the heat condition of the body when used by people with deficiency of Yin and Blood heat (symptoms include heartburn and insomnia, tightness and heat in the chest, dryness of the mouth and throat, sweating in bed at night, and urine with small amount and yellow color, etc.). Therefore, it is recommended to have a traditional Chinese medicine practitioner to identify the symptoms before deciding on the use of medication, and those who have uncomfortable symptoms should consult a doctor, do not blindly use medication, so as not to aggravate the condition.