There are many factors that influence when oral herbal medicine for gastrointestinal adjustment takes effect, so it needs to be analyzed on a case-by-case basis and cannot be generalized. First of all, it is related to the length of the patient’s illness. Most patients with short duration of illness and acute stage recover quickly and can get better within a week or so after oral intake as long as the herbal medicine is right. If the patient has a long duration of illness and recurrent illnesses, it may be necessary to take oral medicine for a long time, at least about 4 weeks for patients with chronic illnesses. Secondly, whether oral Chinese medicine is effective or not is very much related to the accuracy of identification. Many patients feel that Chinese medicine is a slow remedy, which is a misunderstanding of Chinese medicine. In addition, the patient’s own cooperation is needed. Many patients have poor gastrointestinal habits related to their own poor living habits and eating habits, such as resting and moving less, often eating cold, greasy and spicy food. Paying attention to improving these bad habits during oral Chinese medicine will also be of great help to recovery. As mentioned above, whether and when oral Chinese medicine can be effective is affected by many factors and has individual differences, so it is not possible to make a generalization. It should be noted that during the period of taking Chinese medicine, patients should take regular rest and rest and avoid eating cold, greasy, spicy and other stimulating foods to avoid affecting the efficacy.