Optical channel power automatic equalization method of WSS type ROADM node equipment

The invention relates to WSS type ROADM transmission equipment and an optical channel power automatic balancing method in the equipment; the equipment comprises an optical property monitoring function module and a WSS module; the optical property monitoring function module is used to complete the functions of optical channel power detection and feedback; the WSS module controls the attenuation of the corresponding optical channel according to the detecting result by the optical property monitoring function module in order that the plainness of each optical channel power of an output line can reach the stipulated requirement, thereby realizing the automatic balance of the optical channel power of the ROADM transportation equipment.