Pu 'er tea is not as long as possible. The best shelf life of Pu 'er tea is only about 10 years, and the older it is, the more fragrant it will be. If stored improperly, the best shelf life will be shortened accordingly. Only when qualified products are stored under suitable conditions will the quality change to a better direction. If the quality is not up to standard at first, or improperly stored in the later period, the quality will be bad for a long time. The storage of Pu 'er tea is very particular, and the high-temperature and humid environment is easy to cause mildew. Therefore, if you want to taste the old fragrance of Pu 'er tea, you should store it in a cool and ventilated environment with a temperature of 20℃~30℃ and a humidity of less than 75%, and isolate foods with peculiar smell to prevent Pu 'er tea from stinking.