The invention discloses a method for setting the reclosing time on the basis of secondary arc currents and recovery voltages. The method includes judging types of single-phase earth faults when the single-phase earth faults of double-circuit lines of the same towers occur; computing numerical values of the secondary arc currents and the recovery voltages by the aid of the types of the single-phase earth faults, selecting the appropriate reclosing time and switching the reclosing time of the double-circuit lines of the same towers to the reclosing time corresponding to the current fault types. The secondary arc currents and the recovery voltages correspond to the current fault types. The method has the advantages that the corresponding reclosing time can be selected according to the types of the specific single-phase earth faults of the power transmission lines and can be changed along with running conditions of the power transmission lines instead of being fixed, accordingly, the optimal reclosing time can be selected when the running conditions of the ultrahigh-voltage double-circuit lines of the same towers are different, the problem of reclosing failures during temporary faults can be effectively solved, and the single-phase automatic reclosing success rate can be increased.