Automatic sterilizing device for automobile

The invention relates to the technical field of automobile disinfection, in particular to an automobile automatic disinfection device which comprises a box body, a base is installed at the bottom of the box body, a sterilization mechanism and a disinfection mechanism are installed on the box body, a first top cover is installed at the top end of the box body in a sealed mode, and a water tank and a disinfectant tank are installed in the box body in a sealed mode. Sterilization partition grooves are formed in the two sides of the interior of the box body in a partitioned mode through the water tank and the disinfectant tank. According to the vehicle-mounted air humidifier, when air in a vehicle is humidified, the first ultrasonic nebulizer is started, the first ultrasonic nebulizer atomizes a water source in the water storage barrel, the atomized water source is discharged through the discharging cover, and the air in the vehicle is humidified. After the second ultrasonic nebulizer is started, the disinfectant