Small GTP binding protein Rho and its downstream Rho-kinase pathway play an important role in the various cellular functions,including contraction,migration,proliferation,adhesion and apoptosis,etc. This article reviews the role of Rho / Rho-kinase pathway in the pain generation and development and clinical application of Rho / Rho-kinase inhibitors. It discusses the feasibility of Rho / Rho-kinase as a target for analgesics. Accumulating experimental and clinical evidences indicate that Rho / Rho-kinase pa...