Objective:To analyze the effect of different vascular access on the outcome in peripheral blood stem cells collection by a network Meta-analysis, and to provide a reference for clinical medical staff to select the best vascular access.Methods:A systematic search was carried out in Chinese Knowledge Infrastructure database (CNKI), Wanfang Database, VIP Database, Chinese Biomedical Literature Database, Cochrane Library, Web of Science, PubMed, Embase, from inception until April 15, 2023. Two researchers independently screened literature and extracted data. Bayesian network meta-analysis was performed using R4.2.2 and Addis-1.16.6 softwares.Results:A total 7 pieces of research were included, 5 vascular access methods were peripheral artery, peripheral vein, artery-vein, femoral vein-central venous catheter (FV-CVC), and internal jugular vein-CVC (IJV-CVC). The results showed that compared with the peripheral veins, there was no significant difference on CD34 cells between other vascular accesses in the primary outcome measure when collected peripheral blood stem cell collection. On the single blood volume treatment time, peripheral vein and IJV-CVC were statistically significant ( MD = 14.80, 95% CI 2.70-22.38, P<0.05) . The SUCRA ranking probability chart showed that on CD34 cells, FV- CVC>IJV-CVC>artery-vein>peripheral artery>peripheral vein access; for a single blood volume treatment time and monocyte number, peripheral artery was superior and the next was peripheral vein. Conclusions:Current evidence suggested that Peripheral artery may be the best vascular access in peripheral blood stem cells collection, which opens a new way to establish the vascular access for peripheral blood stem cells collection, but it needs to be confirmed by large clinic trials.