The invention discloses a method for improving the electrical conductivity of a silver-nanowire transparent conductive film through the solution method. According to the method, the prepared silver-nanowire transparent conductive film is placed into a sodium borohydride solution of certain concentration to be soaked for certain time, then placed into a halide solution of certain concentration to be soaked for certain time after being cleaned and dried by an air blower after being cleaned, and therefore the electrical conductivity of the silver-nanowire transparent conductive film can be improved. The method is easy to operate, low in cost and suitable for large-scale production.