The present invention relates to an on-off lever of a disconnecting switch for a power distribution line that can connect or disconnect lines through easy and safe manipulation of the on-off lever. According to an embodiment of the present invention, the on-off lever of the disconnecting switch for the power distribution line, the on-off lever having: a lever body mounted to an end part of a movable member; a shaft hole formed on a first portion of a middle part of the lever body; a locking step provided on a lower part of the lever body such that the locking step is locked to a locking end; a guide hole formed on a second portion of the middle part of the lever body; and a manipulation means provided on an upper part of the lever body.