The invention discloses an auxiliary positioning device of a laser coding machine. The auxiliary positioning device comprises a machine body (1), and the machine body (1) is provided with a conveyingmodule (2), a fixing module (3), a camera module (4) and a management module (5). When the auxiliary positioning device is in operation, the conveying module (2) is arranged on an automatic productionline and conveys a product to a camera scanning area of the laser coding machine, the product is fixed to one position through the fixing module (3), the camera module (4) is used for scanning the image of the product, image information obtained finally through scanning is sent to the management module (5) to be processed, and a positioning adjusting device (6) is arranged on the fixing module (3) to be used for adjusting the placing position of the product. Stable positioning of the product can be achieved, the definition of patterns or words coded by the laser coding machine can be more effectively ensured, and the coding effect is improved.