According to Chinese medicine analysis, the most common causes are: qi and blood deficiency, qi stagnation and blood stasis, dampness and heat and feel the wind: 1. Chinese medicine says “hair is the rest of the blood”, qi and blood deficiency can not be nourished, then the hair is dry and fall off; 2. depression, anger leads to qi stagnation and blood stasis, qi and blood circulation is poor, then the nourishment is also weakened, the presence of stasis of blood symptoms are particularly serious; 3. Often high-fat diet, resulting in internal dampness and heat, dampness and heat vaporization, poor hair growth, greasy hair, and hair root atrophy, that is, seborrheic alopecia; 4. Physical quality is weakened, inadvertently feel the wind evil caused by the hair patch loss, that is, baldness, also known as the “ghost shaved head”.