Psoriasis is also known as psoriasis, and there are many kinds of biologics that can be used for the treatment of psoriasis, and the more commonly used ones are stockchizumab injection, ezekizumab injection, ustekinumab injection and so on. 1. Skuticosimab injection: the drug can selectively bind interleukin 17A and inhibit its interaction with the receptor, thus inhibiting the release of pro-inflammatory cytokines and chemokines, so it can be used for the treatment of psoriasis and ankylosing spondylitis and other diseases in the clinic. 2. ezekizumab injection: it belongs to the same type of drug with stavudine, which is a kind of humanized monoclonal antibody, capable of inhibiting the interaction between cytokine interleukin 17A (IL-17A) and IL-17 receptor, and has certain inhibitory effect on the release of pro-inflammatory cytokines and chemokines, so it can be used in the treatment of psoriasis. 3. Ustekinumab Injection: It is a humanized IgG1k monoclonal antibody that binds to the p40 protein subunit of human interleukin IL-12 and IL-23, and participates in the process of inflammation and immune response, and can be used in the treatment of psoriasis patients. The use of biologics may increase the risk of infection, so they need to be contraindicated in patients with severe infections or active infections, and in those who have an allergy to the components of the drug. To ensure the safety and effectiveness of the drug, it must be used under the supervision of a doctor.