摘要医学研究中数据质量是决定研究成败的关键，因此做好数据的质量控制工作是确保研究成功的重要一环。REDCap系统是医学研究领域中一种新兴的数据采集系统，在国内外研究中逐渐得到应用。如何应用REDCap系统实现医学研究数据的双录入及质量控制，是研究者们在研究中应用该系统时关心的热点问题。本文将从研究项目的创建、数据采集工具的设计、数据的双录入、数据核查和导出等方面，系统全面地介绍如何利用REDCap系统进行数据双录入及质量控制。

abstractsIn medical research, the quality of data is the key to success. Thus, data quality control becomes an important part of ensuring the research's high quality. REDCap system is an emerging data acquisition system in medical research, which is gradually applied in research at home and abroad. It is a hot issue to realize double data entry and data quality control in using the REDCap system, which researchers are concerned about when this system is supposed to apply. This article will systematically introduce how to use the REDCap system for double data entry and quality control from the aspects of research project creation, data collection tool design, double data entry, data checking and exporting.