Phellodendron is one of the most commonly used herbal heat purifiers. It is a bitter cold medicine that can not only clear heat, but also dry dampness. Therefore, the most common combination of Phellodendron is with Zhi Mu, such as Da Yin Wan and Zhi Bai Di Huang Wan, which mainly treats Yin deficiency and fire, adolescent dreaming, and many children have precocious sexual performance, so it is better to use Zhi Mu Huang Phellodendron. For young people with acne, excessive androgen secretion and endocrine disorders, you can also use Zhi Mu Huang Bai or Zhi Bai Di Huang Wan. In addition, it can also be used with Atractylodes macrocephala, that is, Ermiao pill. Atractylodes macrocephala with Phellodendron has the effect of removing bitter cold, clearing heat and drying dampness, lower jiao damp heat, sore legs, foot odor, sweating, sweating in the vulva, hydrangea wind, that is, scrotal dermatitis, vulvar dampness or vulvar damp itch in women, and scrotal dampness in men, all can be treated with Ermiao pill. So Huang Bai can clear heat and dry dampness as well as nourish Yin and clear heat and fire.