Specifically, the image obtainer 1 sends the license plate number image to the first identifier 2. The first identifier 2 divides the license plate number image into different regions according to characters, and compares a color, form and texture of a character in each of the regions with a color, form and texture of a character in the preset standard license plate number image. If at least one of the color, form and texture of the character in any of the regions is different from the corresponding at least one of the color, form and texture of the character in the standard license plate number image, it is determined that the license plate of the vehicle is a tampered plate (i.e., performing step 26); and if all of the color, form and texture of the character in each of the regions are the same with the color, form and texture of the character in the standard license plate number image, it means that the license plate of the vehicle is a normal plate, and thus the procedure is ended.

Step 26, recording the vehicle as a vehicle with a tampered license plate.

Step 27, recording the vehicle as a vehicle with a blocked license plate.

As shown in steps 21-27, by obtaining a vehicle image and then obtaining an license plate number image therein, and determining whether the license plate of the vehicle is tampered according to the license plate number image and a preset standard license plate number image, the apparatus for identifying license plate tampering of the disclosure realizes automatic identification of a tampered license plate number without human laboring, thus saving time and labor, reducing human cost, and further improving precision and reliability in identification of tampered license plates.