Through the research of the physical and mechanical properties of the self leveling mortar, The authers developed a super flowing agent. The self leveling mortar with this flowing agent has a higher leveling property and longer workable time than ever. Its flowing diameter could reach to 240 mm, its workable time is within one and two hours, and its compression strength is more than 60 MPa. It can also increase the early strength and reduce the shrinkage by adding a certain amount of reinforcing material.