Multichannel MAC can fully utilize the frequency resources of PHY layer, which can reduce interference and improve throughput Grounded on ZigBee protocol architecture. A virtual link based multichannel MAC (VLMAC) was proposed， aiming at clustered network, VLMAC combines TDMA with FDMA. In VLMAC, Clusterheads schedule timeslots achieve noncollision during intracluster communication. The clusters in twocluster hops range use different channel to avoid intercluster interference. Intercluster communication between the cluster heads is based on virtual link (VL). There are several unoverlapped VLs. Virtual MIMO is also employed to solve severe enormous data induced collision problems. Furthermore, hidden terminal problem is also considered in our algorithm. Simulation results have shown that interference, latency and energy consumption can be reduced in VLMAC.