The Chinese medicine classification of psoriasis is generally divided into five types, as follows: 1, blood heat and internal deficiency evidence: the main treatment is to clear heat and cool the blood, detoxify and eliminate spots, and the key formula is Rhizoma Dihuang Tang plus or minus; 2, blood deficiency type: the main treatment is to nourish blood and moisten dryness, and the main formula is Angelica Drink plus or minus; 3, stagnation of qi and blood: that is, blood stasis evidence, the treatment is to activate blood stasis, detoxify and open the ligaments, and the prescription is Tao Hong Si Wu Tang plus or minus; 4, dampness and toxicity containment evidence: the treatment is to clear dampness and heat, detoxify and open the ligaments, and the main prescription is Dioscorea Infiltration and Dampness Tang plus or minus; 5, fire and toxicity incandescence evidence: the treatment is to clear heat and fire, cool the blood and detoxify, and the main formula is Qing Fei Fu Defeat Poison Drink plus or minus.