1. Put half a pot of water in the casserole, then add Astragalus membranaceus and Codonopsis pilosula (both dry), and then turn on high heat to boil.

2. Chop the fresh half chicken into chicken pieces, then put them in a pot, soak them in tap water, rinse them off, and then put them in another pot for cooking (about 2 minutes).

3. After the chicken nuggets are boiled for 2 minutes, take them out and rinse them with hot water to wash off the impurities on the surface of the chicken nuggets.

4. Then, take it out and put it into the boiled casserole of Radix Astragali and Radix Codonopsis, add appropriate amount of salt, cover the lid and boil it over high fire, and then cook it over medium fire 15 minutes.

5. Then, wash the Pleurotus ostreatus, break it into small narrow leaves, blanch it with boiling water, and then take it out and put it in the chicken stew.

6. Then continue to simmer with medium fire 10 minutes, and then simmer with low fire for 20 minutes to make delicious and nutritious chicken soup.