The utility model discloses a circuit processing apparatus for reducing line loss, including wire and processing apparatus, processing apparatus includes shell body, fixed cover, support column, fixedplate, slider and louvre, wire outside equidistance cover has a plurality of fixed covers, angle fixed such as the fixed cover outside have three support column, the one end vertical fixation that fixed cover was kept away from to the support column has the fixed plate, the shell body cover is in the outside of fixed plate, the fixed plate becomes the arc, and one side that the support column waskept away from to the fixed plate laminates with the inner wall of shell body mutually, one side that the support column was kept away from to the fixed plate is equipped with slider, outer shells inner wall is equipped with the spout with slider matched with, slider sliding connection is in the spout, shell body lateral wall equidistance is equipped with a plurality of louvres, and this a circuit processing apparatus for reducing line loss is at the inside spout that is equipped with of shell body to can make things convenient for the slip of slide, make things convenient for the cable mounting inside the shell body.