The purpose of this study is to evaluate and compare the safety and efficacy of PSORI-CM01 formula vs Gu Ben Hua Yu formula combined with Expanded Allogeneic AD-MSCs in patients with moderate to severe psoriasis. And it explores the expectations of patients for the treatment of traditional Chinese medicine combined with stem cells and their expectations to participate in this study. The trial would provide preliminary data for large sample clinical randomized controlled trials.