The present disclosure provides an information sampling analysis method, an optical splitter, a fiber splice tray, local side sampling equipment. The local side sampling equipment obtains an optical or electrical signal of local side equipment, and establishes a connection relationship between a terminal device and the local side equipment based on data reported by the terminal device. In this way, the service communication line connection relationship across the network can be obtained. According to the present disclosure, active equipment needs to be introduced to the local side only, the passive optical cross-connection network does not need to be transformed, thus the engineering quantity of the network deployment is small and the investment is low. Whether a service optical or electrical signal exists in a line is determined based on a line occupation identifier, to update in real time communication line information stored in the information sampling analysis platform.