The invention discloses a goods circulation tracking and supervising system based on a supply chain. The system comprises an automatic bar code scanner, a wireless data transmission module, a vehicle-mounted terminal module and a cargo distribution center terminal, a conveying roller is driven by a servo motor to rotate, and goods can be conveyed on the conveying belt, so that the trouble of manual code scanning of an operator can be reduced, and the code scanning input speed is increased; the three bar code scanning cameras are used for scanning the codes of the goods respectively, and the scanning accuracy and convenience of the bar code scanning camera are greatly improved; a screw penetrates through the upper end of the supporting block through threads, and the threads are inserted into the opposite sides of the support frames, so that the occupied space of the automatic bar code scanner is reduced; the automatic bar code scanner is simple in structure and convenient to carry, thefixing piece is pulled to pull the card out of the upper reinforcing block, then the lower supporting block is rotated, after the lower supporting block rotates by a certain degree, the fixing piece is loosened, the occupied space of the automatic bar code scanner is further increased, the automatic bar code scanner is convenient to carry, and the card is matched with extrusion force of the resetspring to greatly improve supporting stability of the lower supporting block.