Huang ZH , et al. - Among 1,426 diabetic patients (542 in the diabetic foot ulcer [DFU] recurrence group and 884 in the non-recurrent DFU group), researchers identified the risk factors for the recurrence of DFUs. They electronically searched PUBMED, EMBASE, Web of Science, Cochrane Library, China Biology Medicine, China National Knowledge Infrastructure, WanFang, and VIP databases to identify eligible studies updated to January 2019 to collect case-control studies or cohort studies on the risk factors for the recurrence of DFUs. According to findings, male gender, smoking, duration of diabetes, duration of past DFUs, plantar ulcers, peripheral artery disease, and diabetic peripheral neuropathy were included risk factors for the recurrence of DFUs. In age, body mass index, total cholesterol, diabetic nephropathy, diabetic retinopathy, or hypertension, no significant differences have been discovered. Healthcare staff should pay attention to the risk factors identified for DFU recurrence. Due to the limited quality and quantity of the included studies, to verify the conclusion, rigorous studies with adequate sample sizes are required.