1. Put the dried houttuynia cordata into a sealed bag or container, make sure that no air enters, and try to squeeze out the air from the bag. Put the bag or container in the refrigerator.

2. Put the dried Houttuynia cordata into a freezing bag, squeeze out the air in the bag as much as possible, and store it in the freezer of the refrigerator. Freezing can prolong the shelf life of dried houttuynia cordata Thunb.

3. Vacuum sealing the dried Houttuynia cordata with a vacuum sealing machine can effectively prevent oxygen and moisture from entering and prolong the shelf life.

4. Put the dried houttuynia cordata in a well-ventilated place, dry it and store it in a dry container. Ensuring a dry environment can prevent mold growth.