The invention discloses a river sewage treatment process. A water ecosystem for river water is constructed with the adoption of a biological-ecological river water quality integrated purification mode and in combination with sewage interception pretreatment and artificial water aeration technologies and beneficial strain microorganism and aquatic submerged plant remediation technologies, metabolism of the whole water in a river can be promoted, the self-cleaning capacity is improved, pollutants are turned into harmless matters without changing the outside structure of the river, and besides, the river sewage treatment process is low in construction cost, short in cycle and suitable for popularization.