Psoriasis is a harmless disease that should never be treated in a harmful way, let alone abusing too many drugs in a hurry. Long-term and heavy use of certain drugs may cause more harm than the disease itself! The treatment of psoriasis should follow one principle (it is a chronic disease that is not harmful to life and should not be treated with excessive methods). Two treatments (to treat psoriasis like an allergy, to treat psoriasis like a drug allergy. Three good and three bad (not treating is better than treating indiscriminately, slow treatment is better than fast treatment, and Chinese medicine is better than Western medicine). Four difficult and four not difficult (long and irregular disease is difficult to treat; male patients are more difficult to treat than female patients; those who have used immunosuppressive drugs are more difficult to treat than those who have been treated in the past; parts of the body with more skin, tendons, bones, less qi and blood, such as the scalp, the front of the shin of the lower leg, the sacral tail and the back of the hand, are more difficult to treat than those with abundant muscles and sufficient qi and blood); five to be five not (to be simple and not complicated; to be safe and not risky; to be gentle and not (confrontation; to leave room, not to kill; to treat people not diseases).