An improved time division multiplexing network method is proposed to solve such problems as the long queuing delay time, the low link utilization ratio and the non-ideal network throughput which are caused by the increased nodes when time division multiplexing(TDM) technology is used in the ultraviolet communication network at present. Based on the model of ultraviolet communication vertical transceiver, this method selectes the central node to radio into the adjacent cell by taking weighted algorithm of power factor into consideration, and distributes the adjacent cell different slot sections by using piecewise slot method to achieve the goal that the nodes in the far area can use time slot repeatedly and the contradiction between the increased nodes and the limited time slot can be solved. The simulation analysis indicates that, compared with TDM, when the network node number is 40, this method can decline 4 ms in the queuing delay time, raise 2.7% in the link utilization ratio, and increase 1800 bit/s in the channel throughput.