Psoriasis is a chronic inflammatory skin disease characterized by erythema and scaling, and its onset is related to factors such as genetics, infection, abnormal immune function, mental stress response and epidermal cell metabolism disorders. It affects patients’ mental and physical health to varying degrees and reduces their quality of life and work efficiency. Clinically, it can be divided into four types: common type, pustular type, arthritic type and erythrodermic type, with common type being the most common type. There are many treatment methods for this disease, but most of them can only achieve immediate effect, only temporary relief, not cure, and cannot prevent recurrence. Patients in the acute phase should not drink alcohol and eat irritating food, such as spicy food, avoid drug stimulation, avoid trauma and drug abuse, so as not to aggravate the disease. Patients should therefore lift their worries, establish the determination and confidence to fight the disease, avoid the pursuit of a cure and abuse of drugs everywhere, which is counterproductive. The disease can be divided into mild, moderate and severe according to the area of the lesion and the site of onset. In mild cases, only topical medication is needed, and the drug with the least adverse effects is chosen for treatment; in moderate to severe cases, combined treatment is often needed, and the treatment drugs are adjusted according to the response to treatment, and sequential, alternating, intermittent and combined treatment is used as much as possible. Different treatment regimens, i.e. individualized treatment, must be used depending on the patient’s condition.