In real world clinical studies,standardized data acquisition method is a key step in the formation of reliable clinical evidence.This article described how to carry out clinical data collection and how to preprocess data in order to ensure the quality of data.The results showed that from the data sources,data collection contents,collection key points,data description and evaluation,this paper put forward the method of collecting the real world data of traditional Chinese medicine (TCM).It was concluded that the standardized methods of clinical data acquisition had laid a solid foundation for real world research.