There are many injections that can be used for the treatment of psoriasis, the more commonly used in the clinic are compound glycyrrhizin drugs, such as compound glycyrrhizin injection with anti-inflammatory, immune regulation, anti-allergy, liver protection and other effects, can be used for the treatment of psoriasis, usually static drip for about 2 weeks. There are also traditional Chinese medicines such as Xiyanping injection and recombinant human interferon α2b gel which have the effects of clearing heat, detoxifying and cooling the blood, and they can also be used in the treatment of psoriasis progression. In addition to this, biologics such as tumor necrosis factor antagonists like etanercept, infliximab, adalimumab are also injections. Some can be injected subcutaneously, while others need to be sedated, and are also more effective in treating psoriasis, but are currently more expensive.