Abstract: There are many power transmission lines passing through the industrial mining area of Qarhan Salt Lake, and the special engineering characteristics of weak saline soil along the power transmission line and the complex influencing factors near the tower foundation have a great impact on the survey, design, construction and later safety operation and maintenance of the transmission line. This paper focuses on the construction of transmission lines in the weak saline soil area of the Qarhan Salt Lake, summarizes the engineering characteristics of the weak saline soil along the transmission line in Qarhan Salt Lake area, analyzes the factors affecting the stability of the tower foundation in the weak saline soil area, and finally gives some suggestions in order to provide reference for the construction of the transmission line in the weak saline soil area of the inland salt lake.