Atractylodes macrocephala in water has the effect of drying dampness and strengthening the spleen, dispelling wind and dispersing cold (removing wind and dispelling cold). However, the effective dose of Atractylodes macrocephala in water is limited, and it usually needs to be reasonably prepared and correctly boiled in order to achieve the effect of curing diseases. Atractylodes macrocephala is a traditional Chinese medicine with pungent, bitter flavor and warm nature. Clinically, it is mainly used for the treatment of dampness obstruction of the middle jiao (dampness hinders the function of the spleen and stomach), wind-dampness paralysis (paralysis caused by feeling wind, dampness and other evils), wind-cold and dampness table evidence, night blindness and eyes and eyes dimming. It is important to note that Cangzhu is not recommended for people with Yin deficiency, internal heat, or Qi deficiency and excessive sweating. The effective dose of Cangzhu in water is limited, generally can not achieve the therapeutic effect; Cangzhu in water if you feel unwell after drinking it, it is recommended to stop using it in time, and consult a doctor in time.