The present invention relates to the technical field of mechanical equipment, in particular to an automatic drilling device for the fixed hole of the vehicle-mounted air filter, which can conveniently improve the uniformity of the distribution of the vacancies and the accuracy of the position by performing automatic drilling processing on the vehicle-mounted air filter, preventing The deviation of the drilling space will affect the product installation, the stability of the equipment will be improved, and the quality of the hole will be effectively improved. At the same time, the hole opening method will be effectively simplified, the physical strength and time of manual operation will be saved, the work efficiency will be improved, and the practicability and reliability will be improved; including Workbench, four sets of outriggers, fixed sleeve, rotating shaft and annular groove plate, the four sets of outriggers are installed at the bottom of the workbench, the fixed sleeve is installed in the middle of the workbench, and the upper and lower sides of the fixed sleeve protrude To the outside of the workbench, the bottom of the rotating shaft passes through the fixed sleeve and stretches out to the below of the fixed sleeve.