The utility model provides a silica -based WDM light transceiver module, silica -based WDM light transceiver module includes: silicon photon chip is including modulator array and detector array, and because the wavelength division multiplexer and the demultiplexer of planar optical waveguide technology, wavelength division multiplexer with the modulator array is connected through the encapsulation, demultiplexer with detector array connects through the encapsulation. The utility model discloses a wavelength devision multiplex that realizes with silicon photon chip with based on planar opticalwaveguide technique (PLC) and separate multiplexing chip package and realize the WDM optical module together to avoid the difficulty of silica -based wavelength devision multiplex demultiplexer in technology, and to the WDM light transceiver module of tradition based on discrete device and PLC technique, the integrated level hangs down, shortcoming that the consumption is high, the utility model discloses an adopt silicon photon technique to be in the same place the modulator array with detector array is integrated, can improve light transceiver module's integrated level greatly, reduce the consumption.