Study of the Efficacy and Safety of ICP-332 in Participants With Chronic Spontaneous Urticaria

Inclusion Criteria: * 1\. Men and women aged 18 to 75 years. * 2\. Diagnosis of CSU inadequately controlled by second generation H1-antihistamines. * 3\. CSU duration for ≥ 6 months prior to randomization. * 4\. Before initiating any screening or study-specific procedures, the subject must voluntarily sign the informed consent form. Exclusion Criteria: * 1\. Having the other medical conditions related to CSU or other skin diseases/conditions. * 2\. Potential medical conditions or issues. * 3\. Pregnant female subjects or lactating female subjects. * 4\. The investigator determines that the subject is unsuitable for participating in this study for any reason.