A vehicle simulation device and method, the device includes a user interface, a database, and a processing device. The user interface includes a scenario selection interface, a vehicle signal display interface, and a motion image display interface. The database stores external motion images and motion image description files associated with the external motion images. The motion image description file includes a plurality of time stamps and a plurality of vehicle operating parameters corresponding to each time stamp. The processing device is configured to load a corresponding external motion image to be displayed on the motion image display interface when the user selects a vehicle operation scenario, output the vehicle operating parameters corresponding to the time stamp according to the current time and the motion image description file of the displayed external motion image, and display the vehicle operating parameters on the vehicle signal display interface.