Penicillin can be used to treat psoriasis, especially for psoriasis with punctate immune disorders caused by tonsillitis and pharyngitis due to hemolytic streptococcal infection, the application of penicillin treatment is very effective and can rapidly control the local inflammatory infection lesions, while the immune gradually restored, resulting in the fading of the psoriasis rash, usually in 7-14 days. When the psoriasis rash is red in color and accompanied by dry mouth, bitter mouth and thirst, you can also apply the Chinese medicine Danqing capsule or Baixian Xia Taje capsule to strengthen the treatment of detoxification, heat clearing and blood cooling.