In the indoor wireless communication system

the light-fidelity-wireless fidelity（LiFi-WiFi）hybrid network is an emerging communication mode

which can provide users with high data rate and effectively release the spectrum space.Aiming at throughput optimization of hybrid LiFi-WiFi network

the system load balancing scheme can be formulated as a joint utility maximization problem

and a logarithmic utility function is used to achieve proportional fairness for users.In this scheme

based on the signalling overhead caused by handover between light-fidelity（LiFi）and wireless fidelity（WiFi）

as well as the channel noise from the direct and reflective paths

the data rate and total throughput effected by SNR are analyzed and evaluated with co-channel interference and non-channel interference.The simulation results show that the estimation of the proposed scheme can meet the actual communication demand.