The invention discloses an outer circle surface rolling device including a fixing main body. An inner ring at one end of the fixing body is rotatably cooperated with a steel drive sleeve that can drive power and the other end of the fixing body is screwedly connected with a shell. A screw thread in the shell is connected with a mandrel; the output end of the steel drive sleeve drives a protectingsleeve, a surrounding circle of which is embedded with a roller pin through a discrete drive sleeve and the protecting sleeve is inserted in a central hole located in the mandrel; a tip spring sleeved on an outer ring of the protecting sleeve is compressed between the inner end surface of the mandrel and the discrete drive sleeve; an inner hole of the steel drive sleeve is provided with a plasticdrive sleeve that can adjust and maintain the expansion amount of the sleeve and collocated with the dimension adjusting and locking functions of the mandrel and an adjusting spring as well as a spring pressure sleeve arranged n the plastic drive sleeve, thus realizing the coarse adjustment and micro-adjustment on the rolling parts with various dimensions; a through hole is arranged in the steel drive sleeve and the protecting sleeve and has no length depth position limiting; the processing length of the rolling parts are not restrained; a blocking connecting torque force is stably transferred; the invention adopts a diagonal roller pin structure and has accurate dimension processing.