Alternatively, blocking the tumor-promoting factors that CAFs-produced and the CAFs-mediated signaling pathways, such as developing inhibitors against IL6, CTGF, TGF-β, and SMAD, p-STAT3 signaling, etc. In addition, the application of nano-delivery systems makes it possible to precisely target and eliminate tumor-promoting CAFs and tumor cells. Here, STAT3 is linked to neoplasm.