The storage time of liquid herbal medicines in packaged bags is related to factors such as storage conditions and liquid composition, and the time usually ranges from a few days to a month. Moreover, there may be differences in the storage time of packaged liquid Chinese medicines made by different hospitals and institutions, so it is recommended to ask carefully when purchasing them. In order to ensure the safety of the medicine, it is generally not recommended to take it again if a swollen bag or odor is found, or if bubbles appear. I. Preservation conditions: 1. Generally, vacuum-packed liquid Chinese medicine can be preserved for 3-5 days when placed in a cool and ventilated home environment under sealed conditions. However, in the summer when the temperature is high, the preservation time may be shortened and deterioration may occur in about 2 days. And winter storage time can be slightly extended to about 7 days; 2, if it is refrigerated, the temperature is about 0-5 ℃, can be stored 1-2 weeks, but preferably not more than 1 week; 3, if you need to store for a long time, you can also choose to freeze, can be stored for about 1 month, but try not to exceed 1 month, too long may affect the effectiveness of the medicine. Second, the liquid composition: If the liquid Chinese medicine contains animal herbs such as whole scorpion, or herbs with relatively high sugar content such as ripe groundnut and astragalus, the preservation time is relatively shorter and it is recommended to take it as soon as possible according to medical advice. In addition, it is generally recommended to buy the dosage according to the course of treatment, rather than buying multiple courses of treatment at once. This not only ensures the freshness of the liquid Chinese medicine, but also allows the doctor to keep track of the patient’s treatment progress and adjust the drug combination as well as the dosage within the prescription in time, which is conducive to the recovery of the patient’s condition.