<qa>  What is the gold standard for CIT?At present, although platelet transfusion is the gold standard to treat severe CIT, its clinical application is limited due to many disadvantages, such as short time for storage, not easy to save, the risk of infection and immunological diseases. Whats more, other cytokines including IL-11 and rhTPO, are not so useful in clinical work. It is necessary to explore a new therapeutic method to treat CIT. 