Due to the dynamic characteristic of Virtual Network Request (VNR) resources, a Virtual Network Embedding algorithm based on Dynamic Virtual Network Requests (DVNR-VNE) was proposed. On the basis of mixed linear programming theory, we adopted multi-queue to pre-process different types of VNRs and established a multi-object embedding model with minimum mapping and migration cost. Those requests which need to release resource would be accepted firstly to support more VNRs, and the new arrived VNR would be embedded by an optimized WinDow-Virtual Network Embedding (WD-VNE) algorithm. The simulation results show that the proposed algorithm can reduce link cost, migration cost and can also obtain higher accept ratio.