The main cause of hair loss due to kidney deficiency is the weakness of the kidneys. We can prevent hair loss by conditioning the kidneys. Kidney deficiency does not cause the death of hair follicles; treating kidney deficiency can improve the condition of hair loss. When hair loss due to kidney deficiency occurs, it should be treated early. Traditional Chinese medicine methods can be used for treatment. Keeping the hair clean and ensuring the hygiene of the hair follicles can help prevent hair loss.