In order to improve the limited bandwidth resource allocation performance of indoor visible light networks in a simple and effective manner, a network access and maintenance method based on time division multiple access （TDMA） mechanism was designed, and the user competition network access process and network maintenance mechanism were described in detail. By designing specific frame structures, the probability of users accessing the network was analyzed. The experimental results show that the network access and maintenance method can support flexible access and dynamic resource allocation for multiple mobile users. The total time required for all five terminals to access is only 25 ms. This method is easy to implement in engineering and can effectively improve resource utilization.