The invention discloses a method for intelligently ranking power transmission lines. Line engineering characteristics and various factors considered by a designer during the design are fully considered, the designer can be assisted in related design works, and the design quality and the design efficiency are effectively improved. According to the method, actual constraint conditions of the engineering are added, under the premise that the transmission line has selected a path, the basic conditions of the engineering are manually set to carry out the processes of selecting, positioning and connecting towers and components; and towers are ranked one by one starting from a starting pile of the line by using a dynamic programming algorithm, the span between the towers is reduced according to acertain step length until a lower conducting wire meets the safety distance to the ground and the cross, thereby ensuring that each tower is optimal, the towers are ranked to the end of the line, andthen the entire line is optimal.