Drinking Chinese medicines may cause bitter taste in the mouth, and it is recommended to take them after meals to avoid causing bitter taste in the mouth. Generally speaking, it is advisable to take Chinese medicines within one hour before meals, so as to facilitate the absorption of medicines as soon as possible. However, some Chinese medicines can stimulate the mucous membrane of the gastrointestinal tract, leading to gastrointestinal digestive disorders, causing bitter mouth, bad breath and other indigestion symptoms, so if this is the case, it is recommended to take it after meals, in order to prevent side effects. In addition, each flavor of Chinese medicine itself has five different flavors, sour, bitter, sweet, pungent and salty, mainly through the mouth taste, that is, with the body’s sensory organs to identify, the five flavors is the drug itself taste response. Different flavors of Chinese medicine together to form a prescription for the treatment of disease, good medicine is bitter, most of the Chinese medicine is bitter, will cause bitter mouth, need to be taken after meals. Most Chinese medicines are bitter in flavor, causing bitterness in the mouth, and need to be taken after meals, while tonic prescriptions should be taken on an empty stomach. Therefore, for different diseases, Chinese medicine taking time is different, the patient should be under the guidance of a professional doctor, according to the doctor’s time to take.