TaC coated deep ultraviolet LED graphite base refers to the process of improving the performance and stability of the device by depositing a TaC coating on the graphite base during the preparation of the deep ultraviolet LED device. This coating can improve the heat dissipation performance, high temperature resistance and oxidation resistance of the device, thereby improving the efficiency and reliability of the LED device. Deep ultraviolet LED devices are usually used in some special fields, such as disinfection, light curing, etc., which have high requirements for the stability and performance of the device. The application of TaC coated graphite base can effectively enhance the durability and performance of the device, providing important support for the development of deep ultraviolet LED technology.