Traditional Chinese medicine believes that rooster is yang in nature and has a strong warming effect, suitable for patients with yang deficiency and weak qi to consume; hen is yin in nature and has a calm and slow nourishing effect, suitable for women in labor, old and weak, and those who have been sick and weak to consume. Chicken is a high-quality meat for health and nourishment, and it is more suitable for human absorption as well as fish.

Roosters are better for meat and hens are better for soup. In addition, the rooster's kidneys contain more adrenaline, so be sure to remove the kidneys before eating. Adrenaline is easy to cause blood pressure and blood sugar, is strictly prohibited by the health department to eat one of the animal three glands, the kidneys are also known as the "hair".