The utility model relates to the technical field of printers, and specifically relates to an automatic positioning floor printing machine. It includes: a frame, a transmission mechanism, and an automatic printing mechanism. The automatic printing mechanism includes: a sensing device, a first positioning device, a second positioning device, and an ink cartridge. The utility model determines the position of the floor by the induction device, and regulates the spraying position by the first positioning device and the second positioning device, so that the position of the ink cartridge can be accurately corresponded to the position to be sprayed before spraying. Since the process is automatically sensed by the induction device and controlled by the first positioning device and the second positioning device to adjust and control the ink cartridge for printing, the process does not require manual participation, which saves manpower, reduces errors, and thus ensures the accuracy of the floor printing.
