Abstract: Radiography testing is the main testing method for detecting the internal metallurgical quality of aviation casting components. Digital radiography (DR) of radiation has the characteristics of higher testing efficiency, more economic and environmental protection, and easier to achieve automated testing. This paper took aeroengine turbine blades as the experimental object and conducted digital radiography testing process experiments. Through equipment analysis, turbine blade DR testing, and comparative analysis with film radiography testing, a DR testing process for a certain type of aeroengine turbine blade was tested. The results showed that the DR detection results and traditional film radiography detection results for a certain type of aeroengine turbine blade were consistent. The use of DR detection technology for internal quality inspection of a certain type of aeroengine turbine blade had higher detection efficiency and could release detection capacity.