The invention relates to an intelligent automatic sorting and weighing device. The intelligent automatic sorting and weighing device is formed by sequentially jointing a system sorting segment, a system weighing segment and a system pack pulling segment front right to left. A photoelectric switch set I is arranged on the edges of the two sides of the system pack pulling segment. A photoelectric switch set with a length measurement function is arranged on the edges of the two sides of the system weighing segment. A photoelectric switch set with code reading and scanning functions is arranged at the edges of the two sides of the system sorting segment. A photoelectric switch set II is arranged on the edge of a support of the system weighing segment. An orientation measure displayer is mounted on a support of the system pack pulling segment. Power-free rollers or universal wheels are arranged on the outer side of the system sorting segment. Strain force sensors are mounted on the four corners of the bottom of the system weighing segment. By the adoption of the intelligent automatic sorting and weighing device, weighing is conducted fast and easily by the adoption of a strain force sensor technology, the information including the cargo weight, the posting address, the time and the like is directly transmitted to a computer by the adoption of a Bluetooth technology, only one person is needed in operation, working efficiency is improved, and the personnel cost is saved; and by arranging the sectional type device, and a series of actions of data acquisition, weighing, orientation measurement and the like can be completed.