The time of decoction of sand nuts is usually put in 5~10 minutes before the end of the decoction, or it can be put in according to the doctor’s instruction, according to the medical advice. With the effect of aroma, dampness and qi, sand nuts should not be decocted for a long time. Sand nuts, commonly used in traditional Chinese medicine. It belongs to the mature and dry fruits of Yangchun Sha and Green Shell Sha. Mostly harvested in summer and fall. It is warm in nature and pungent in flavor. Attributed to the stomach, spleen and kidney meridians. Sand nut has the effects of warming the spleen to stop diarrhea (relieving diarrhea by warming the spleen), resolving dampness to open the stomach (normalizing gastrointestinal function by removing dampness), and regulating qi to tranquilize the fetus. It is often used in the treatment of dampness and obstruction, coldness in the spleen and stomach, restlessness of the fetus, and malignant obstruction of pregnancy (in early pregnancy, severe nausea and vomiting, dizziness and anorexia, or even vomiting when food is ingested), etc. It is not recommended for people with Yin deficiency and heat. Note that people with heat in yin deficiency are prohibited from taking it. To summarize, sand nut belongs to the qi medicine, should not be decocted for a long time, need to be down, but also by the doctor’s interview combined with the condition and detailed guidance.