Compound Qingdai Pill is a kind of Chinese patent medicine made of pure Chinese medicine, which was used to treat psoriasis in the early stage. It is developed on the basis of folk prescription indigo powder. It is prepared from indigo naturalis as the main medicine, Rhizoma Smilacis Glabrae, Radix Arnebiae, Mume Fructus, Radix Angelicae Dahuricae, Radix Salviae Miltiorrhizae, Herba Taraxaci, Rhizoma Osmundae and Massa Medicata Fermentata. Has the effects of clearing away heat and toxic materials, cooling blood, removing blood stasis, expelling wind and relieving itching. It is mainly used to treat acute progressive psoriasis vulgaris, but it has poor curative effect on chronic plaque psoriasis.