The invention discloses a university canteen natural gas energy-saving and gas-saving device, and belongs to the field of natural gas using equipment. The problems of insufficient use of natural gas,liable waste of natural gas resources and low efficiency and high cost of use of the natural gas exist when the natural gas in an existing university canteen is used are solved. The university canteennatural gas energy-saving and gas-saving device is provided with a ventilation device, in the ventilation process, arc-shaped baffles block part of the natural gas, meanwhile, part of the natural gasflows into grooves to form vortexes in the grooves, so that the flow speed of the natural gas is reduced, the natural gas is enabled to be fully combusted, and the utilization efficiency of the natural gas is improved. The university canteen natural gas energy-saving and gas-saving device is further provided with a heat absorption baffle, heat of a fire source can be well absorbed for the good heat absorption performance and thermal stability of a black chromium coating, water in a water storage cavity can be heated by a large amount of heat, and the hot water communicates with water in a heating water tank through a water pipeline, so that processed food can be effectively heated, manpower and material resources are greatly saved, and the natural gas resources are saved.