Chinese medicine first decoction of raw half-summer water does not need to be poured. The method of decoction of Chinese medicine is different, the first decoction of drugs are mostly toxic or mineral drugs, the first decoction can reduce the toxicity of toxic drugs, and is conducive to the active ingredients of mineral drugs decoction out. The first decoction of drugs should be boiled for about 10 minutes afterward, and then put into other drugs, without pouring out the water. Raw half-summer has a certain degree of toxicity, so it is necessary to take the first decoction, it should be boiled for about 0 minutes, and then into the other drugs, do not need to pour out the water, otherwise it will affect the efficacy of the drug. Half-summer has the efficacy of drying dampness and resolving phlegm (expelling dampness by drying dampness and dissolving phlegm), lowering the rebelliousness and stopping vomiting (stopping the upward rush of gastric qi and stopping vomiting), and eliminating plaque and dispersing knots (eliminating the knots in the body), so it is not suitable to be used with Chuanwu, Chuanwu, Caowu, Caowu, and appendicia, and it is advisable to use caution when taking the raw product internally. Half-summer poisoning can cause numbness of the mouth and tongue, sore and dry throat, epigastric discomfort and other symptoms. The use of Chinese medicine needs to be under the guidance of a professional physician to identify the evidence, do not self-medication, so as not to affect the health of the body.