The utility model discloses a secondary cable box, the power distribution box comprises a box body, the inside of box is equipped with the baffle, the baffle will the box is separated for upper wiring chest and the junction box of lower floor, set up the cable on the baffle and inserted the mouth, dispose the terminal row in the junction box of lower floor. Through setting up the baffle, separate the box and divide into upper wiring chest and the junction box of lower floor, upper wiring chest is used for holding many secondary cables, and the junction box of lower floor is used for providing and meets line space, and the secondary cable in the upper wiring chest passes through the cable inserts the mouth and is connected with the terminal row among the junction box of lower floor. Through inciting somebody to action the box divide into two -layerly, and the upper strata is used for the wiring to walk the line, and the lower floor is used for the wiring, can prevent that more secondary cable from seiying the space and influencing the access of secondary cable, and it is convenient that the secondary cable inserts, and later maintenance is simple.