The invention provides a sorting platform of an integrated sorting machine for potatoes and other underground tuber crops. The sorting platform comprises a sorting platform machine frame, a vibration sieve, a seedling removable roller, a mud cleaning machine, a sorting sieve, a soil returning belt, a soil outlet belt, a traveling hanging device, a traveling traction device and a hand-cranking balance support, wherein the vibration sieve, the seedling removable roller, the mud cleaning machine, the sorting sieve, the soil returning belt and the soil outlet belt are all driven by a motor and a speed reducer, arranged according to a certain discharging difference sequence, and installed on the same sorting platform machine frame. The traveling hanging device, the traveling traction device and the hand-cranking balance support of the sorting platform are arranged on the lower portion of the sorting platform machine frame. By means of the technical scheme, vibration sieving, mud cleaning and impurity removal functions are automatically realized for the potatoes and other underground tuber crops. A waste throwing opening of the sorting sieve is located in the middle of the sorting sieve so that people can stand on two sides of the sorting sieve to carry out sorting and sieving, and work efficiency is improved.