The clinical efficacy of Ren Ren is mainly to dissolve dampness and open the stomach (normalize gastrointestinal function by eliminating dampness), warm the middle and stop diarrhea, regulate qi and pacify the fetus, which can treat the evidence of dampness and turbidity in the middle and obstruction of the spleen, and the dosage should be in the range of 3 to 6g. Sand nuts belongs to a kind of traditional Chinese medicine, because this medicine can play the role of dissolving dampness and opening the stomach, warming the middle and stopping diarrhea in clinic, so it mainly targets the dampness obstruction in the middle, the stagnation of the spleen and stomach qi caused by the stuffiness in the chest and epigastric plumpness, the limbs sleepy and heavy (limb weakness, sinking), the loss of appetite, indigestion and so on, as well as nausea and vomiting caused by the deficiency of cold in the spleen and stomach (spleen, stomach and cold), and the diarrhea and other symptoms. In addition, Sha Ren can also regulate qi and tranquilize the fetus, and can also be used to treat malignant obstruction of pregnancy (in early pregnancy, there is heavy nausea and vomiting, dizziness and anorexia, or even vomiting when food is ingested), and restlessness of the fetus. The dosage of Radix et Rhizoma Gastrodiae is usually 3-6g, which should be adjusted according to the condition. The contraindications for Sa Ren are not clear, and it is recommended to consult a doctor before using the drug.