Abstract: According to characteristics of electrical methods of no secondary pollution,easy operation and low operation fee,four electrical methods,(i.e.)resistance method,current method,inductive potential method and inductive method with remote referred electrode,were put forward to detect leaks on manual liners in landfill.The primary theory is that soil and wastes of landfill are conducting materials because of their moisture and high-density polyethylene is insulated material used as manual liner(geomembrane) in landfill.Based on the research,it is pointed out that leaks can be detected by resistance method but without indicating of their locations;current method is a one-time method,which can not locate leaks;inductive potential method has good applying future and inductive method with remote referred electrode is perfect.