The invention discloses a material distribution system of a deep dewatering machine for sludge.The material distribution system comprises a base and a hopper fixedly arranged on the base, the hopper is internally provided with a drive screw rod and a driven screw rod in parallel, wherein the spiral parts of the drive screw rod and the driven screw rod are equal in length and contrary in direction, the spiral direction of the drive screw rod and the spiral direction of the driven screw rod are arranged to be contrary to each other with the center line as the symmetrical line, one end of the drive screw rod is in drive connection with a variable frequency motor arranged on one side of the hopper, and the other end of the drive screw rod is in drive connection with one end of the driven screw rod through a gear pair located on the opposite side of the hopper; the bottom of the hopper is evenly provided with material distribution holes, and filter cloth for conveying sludge is arranged under the material distribution holes.The material distribution system meets the material distribution requirements under complex situations such as changes of sludge varieties, changes of sludge particle size and changes of sludge moisture content, the treatment quantity is stable and reliable, and quite important significance is achieved for maintaining an ideal dewatering effect, guaranteeing stable operation of equipment and prolonging the service life of equipment.