The invention discloses a portable rubble distribution machine used for highway pavement disease disposal. The portable rubble distribution machine comprises a bottom board. A material tank is installed in the center of the top of the bottom board through a support. The inner portion of the material tank is sequentially provided with a feeding port and a material breaking cavity from top to bottom. A roller is installed on the middle portion of the material breaking cavity through a rotary shaft. A filter screen board is installed in the position close to the bottom and on the inner side of the material breaking cavity through a clamping groove. A power motor is installed on the right side of the support. The power motor and a rotary disc are connected through a transmission belt. The feeding port and the material breaking cavity are formed in the inner side of the material tank and matched with the roller installed in the material breaking cavity and the filter screen board installedat the bottom end of the material breaking cavity, the rubble distribution machine has screening and material breaking functions at the same time, the size of distributed rubble is even, the situationthat the size of the rubble is not even, and thus the material laying thickness is not even is avoided, the rubble distribution effect is improved, and following repair operation of a road is convenient.