The interference problems encountered in the construction of TD-LTE indoor distribution system can be divided into two parts: inter-system interference and intra-system interference. The inter-system interference mainly includes three kinds of interferences: spurious interference

intermodulation interference and blocking interference. In the indoor sub-system

three kinds of interference will affect the network performance at the same time. The intra-system interference mainly uses the multineighbor region co-channel interference brought by OFDM technology. The article mainly analyzes the interference problems encountered in the construction of TD-LTE indoor distribution system and proposes a preliminary solution.