Optical module and wavelength self-adaption method based on message channel

The invention provides an optical module and a wavelength self-adaption method based on a message channel, the optical module comprises an optical transmitting assembly, an optical receiving assembly and an MCU, the optical transmitting assembly is used for transmitting a first optical signal carrying a low-frequency message channel signal; the optical receiving assembly is used for receiving a second optical signal; the MCU is used for sending out an instruction for changing the wavelength and wavelength information, the wavelength information is loaded to the first optical signal in a low-frequency message mode, and the optical emission assembly emits the first optical signal corresponding to the wavelength information according to the instruction and judges whether the wavelength is changed again according to a low-frequency message channel signal loaded on the second optical signal. According to the invention, the low-frequency signal is loaded on the basis of the normal service signal, and the function o