The invention provides a construction waste treatment system. The construction waste treatment system comprises a silver sand system, the silver sand system comprises a third water pool, a sixth waterpool, a first cyclone separator, a second cyclone separator and a silver sand dehydrator. Mud is stored in the third water pool, a first mud pump is arranged in the third water pool, the first mud pump conveys mud in the third water pool to the first cyclone separator, silver sand separated by the first cyclone separator is conveyed to the sixth water pool, a second mud pump is arranged in the sixth water pool, a second mud pump conveys mud in the sixth water pool to the second cyclone separator, silver sand separated by the second cyclone separator is dehydrated through the silver sand dehydrator, and thus the silver sand is obtained. According to the construction waste treatment system, by arranging the silver sand system, and through organic combination of each equipment in the silversand system, the silver sand can be obtained through separation, and construction wastes are effectively recycled.