Aiming at the problem of supplier optimization with completely unknown attribute weight information, Supplier selection model using VIKOR method under Single-valued neutrosophic environment was proposed. Firstly, the weights of decision experts and attribute indexes were determined by language variables; then all the neutrosophic decision matrices given by experts were aggregated by using single-valued neutrosophic weighted average operator to construct the comprehensive neutrosophic decision matrix; Furthermore, by extending the VIKOR method to a single-valued neutrosophic environment, an eclectic ranking of alternative suppliers was obtained. Finally, a simulation example was given to show the effectiveness and practicability of the model, and the flexibility of the proposed model was verified by the sensitivity test.