The invention provides a device for vending fast food. The device comprises a vending device body, and further comprises a dish serving module, a dish storing module, a heating module, a dish gettingmodule, a storage module, a service plate moving module, a power supply module, an order displaying module, an image identification module and a conveying belt module. The vending device body comprises a fully transparent cuboid-shaped glass cover and a support with a water tank; the heating module is arranged on the bottom of the water tank; a window is formed in the glass cover; a first slidingrail and a second sliding rail are arranged on the top of the glass cover, and the dish serving module and the service plate moving module are arranged on the first sliding rail; the dish getting module is arranged on the second sliding rail; the dish storing module is internally provided with a weighing sensor; the storage module, a controller module, the power supply module and a money collection module are arranged on the vending device body. The conveying belt module extends to the window from the rear side on the right side of the glass cover.