Abstract: According to the technical characteristics of X-ray photography exposure curve, the panoramic design of detection parameter system for X-ray photography was formed. The equipment selection and performance comparison can be carried out on the panoramic design to determine the specific radiographic parameters and the default film blackness result, and furthermore to define the definition of specific process image. A combined analysis method of "spherical cone field" and "conical field" is proposed, the software of parameter analysis can be developed on the basis of panoramic design, and the realization of workpiece combination detection with different thickness can be achieved.