Traditional Chinese medicine believes that cock belongs to yang, which has a strong warming and tonifying effect and is suitable for patients with yang deficiency and weak qi. Hens are yin in nature, and their nourishing effect is mild and slow, which is suitable for lying-in women, the elderly, the sick and the disabled. Chicken is healthy and nourishing high-quality meat, which is more suitable for human absorption like fish.

Roosters are more suitable for eating meat, and hens are more suitable for making soup. In addition, the cock's kidney contains more adrenaline, so it must be removed before eating. Adrenaline is easy to cause blood pressure and blood sugar to rise, and it is one of the three major glands of livestock prohibited by health departments. The kidney is also called "hair".