A Clinical Trial of TQH2929 Injection in Patients With Acute Flare-up of Generalized Pustular Psoriasis

Inclusion Criteria: * Age ≥ 18 or ≤75 years old at screening, regardless of gender; * Meet the diagnostic criteria defined by the 2017 European Society for Clinical Nutrition and Metabolism (ESPEN) Research Workshop (ERASPEN) consensus and be diagnosed as （generalized pustular psoriasis(GPP); * Compliant with GPP acute onset; * Able to read and understand, and willing to sign the informed consent form; * Willing and compliant with study visits and related procedures; * Female subjects of childbearing age should agree that contraceptive measures must be used during the study and for 6 months after the end of the study; Exclusion Criteria: * Pustules are limited to psoriasis vulgaris on psoriasis plaques; * Concomitant skin disease or medical disease that may interfere with the investigator's evaluation of the subject's treatment response; * Presence of severe, progressive, or uncontrolled disease, or signs and symptoms that are not suitable for participation in the investigator, in the judgment of the investigator: * Serum virological abnormalities during the screening period; * Chest radiology examination shows that the subject has active tuberculosis or a history of contact with open tuberculosis subjects in the past 6 months or a positive Interferon-Gamma Release Assays(IGRA) test; * History of serious infection leading to hospitalization within 2 months prior to baseline; * Active infection requiring systemic antibiotics, systemic antifungals, or systemic antiviral ther…