Function of Rehmannia glutinosa leaves: Because Rehmannia glutinosa and seeds are warm and the roots of Rehmannia glutinosa are cold, the leaves of Rehmannia glutinosa are between the two, which is peaceful and suitable for most people to eat. Rehmannia leaves enter the lung, liver and kidney meridians, and have the functions of nourishing yin and tonifying kidney, cooling blood and stopping bleeding. Rehmannia leaves have a good therapeutic effect on chronic lung diseases such as pulmonary fibrosis, Alzheimer's disease, brain atrophy, diabetes and dermatosis.