Celery juice contains a certain amount of dietary fiber, and contains certain active ingredients that can promote the establishment of cerebrovascular collateral circulation, fasting is conducive to the absorption of these active ingredients, for cerebrovascular stroke-like diseases with adjuvant therapeutic effects. However, celery juice also has a stimulating effect on the gastrointestinal tract, if the patient himself suffers from chronic gastritis or intestinal irritability-related diseases, it will stimulate the gastrointestinal tract because of celery juice on an empty stomach, resulting in uncomfortable symptoms, such as nausea, heartburn, vomiting and so on. It is recommended to reduce the dose of a single meal to allow for a gradual adaptation process in the gastrointestinal tract. If after a period of time, the patient still can not tolerate fasting vegetable juice, it is recommended to stop taking or adjust to eat after meals, need to pay attention to diet therapy can not replace the regular drug treatment.