It is not recommended to take a pair of herbs for two days, but in special cases it can be taken for two days and needs to be taken as prescribed by the doctor. In most cases, a pair of Chinese medicines is made according to the amount of one day, which is taken in the morning and the evening respectively. If it is divided into two days, it may affect the efficacy of the medicine and not achieve the desired effect, which is not conducive to the treatment of the disease. Moreover, if the medicine boiled at one time is left to be taken on the next day, it may harbor bacteria due to improper storage, which may have adverse effects on the body. However, if there are special circumstances, such as a large amount of medicine or a mild disease, the doctor may consider splitting a dose of medicine into two days, but this is not common. However, it is not common to do so. If the medication is divided into two days, the medication should be boiled separately, and it is not recommended to boil the medication in one go and drink it on the next day. Patients are advised to take the medication as prescribed by the doctor and not to change the dosage randomly to avoid affecting the effectiveness of the medication.