Oral lichen planus is common in clinic, according to its etiology and pathogenesis, this disease can be divided into wind-heat and dampness toxin type, blood deficiency and wind-dryness type, yin deficiency and internal heat type, liver-qi stagnation type, and spleen-dampness non-transportation type.1. Wind-heat and dampness toxin type is mainly accompanied by fever, malignant wind, sweating, headache, sore throat, and the pimples in the oral cavity gather in the form of plaques, and sometimes vesiculation, pain, and the pulse is more floating.2. Blood deficiency and wind-dryness type is mainly manifested as rapid onset of pimples, which are more elevated in color and lighter, and the surface is more rough, which can form striated and reticulate damage. The main manifestation of the type is the rapid onset of the oral papules more elevated, lighter in color, the surface is rougher, can form a streak, reticulate damage, sometimes can be dry oozing blood, itching is more pronounced, the face is more pale or yellowish, itchy hands and feet, the pulse is more thin and weak.3, Yin deficiency internal heat type is mainly manifested as grayish-white pimples scattered in the oral mucosa or groups of white reticulate stripes, accompanied by a dry pharynx, Throat pain, thirst, do not want to drink, do not want to drink means that the thirst does not want to drink water, five heart heat, red tongue, thin moss, fine pulse, the course of the disease is generally longer appeared after a long period of time. 4, liver-qi stagnation type is mainly manifested in the mucous membrane can be seen grayish-white pimples composed of white reticular streaks, often due to emotional depression or anger and impatience, often accompanied by chest pain, female premenstrual breast swelling and pain, the pulse is mostly manifested in the string pulse. 5, spleen dampness does not transport type is mainly manifested in the oral mucosa with scattered or grouped into white netting stripes. Spleen dampness does not transport type is mainly manifested as mucous membrane erosion, there are gray-white pimples and reticulate stripes recurring, and even blisters, the systemic symptoms can be seen in the chest and hypochondrium distension and pain, do not think of food, fever, body fatigue, joints pain, or thirst, bitter mouth, thin stools, the tongue coating is mostly thick and greasy, the tongue texture is relatively light, the pulse is moistened.