Powder X-ray diffraction, as one of the methods for the study of drug polymorphism, has the advantages of not destroying samples and simple operation, and is the main method for the qualitative and quantitative analysis of drug polymorphism at present.

Powder X-ray diffraction, as one of the methods for the study of drug polymorphism, has the advantages of no sample destruction and simple operation.

Most drugs exist in the form of crystals, using X-ray diffraction, we can obtain the diffraction information of drug characteristics for each different crystal type.