A food and vegetable processing device includes a body with a motor so as to drive a processing unit which is attached by a lower cap with an outlet. A top cap is mounted to the lower cap and includes a feeding passage for feeding food and vegetable to the processing unit. The processing unit includes a blade disk, which has a convex top surface thereon cutting teeth are located. The convex top surface drives the food and vegetable to be processed move outward so as to obtain a satisfied result.