The invention discloses an assembly-type constructed wetland rookery system, which is characterized in that a pedestal is positioned at bottom of the rookery system and in landscape water body, several constructed wetland units are arranged on the pedestal, the units are constructed by micropore ceramic filtering bricks, and can form a rookery system main body through staggered arrangement from up to down; a water outlet pipe is arranged at center of the rookery system, the water outlet end is higher than top of the rookery system by 2-3cm, the water output pipe is connected to a plastic pipe, the plastic pipe is arranged at upper part of the rookery system in a spiral state, flowing water covers the whole rookery system from up to down through a submersible pump; a filling material is arranged in the constructed wetland unit, and water plants are planted and pet fish is cultured. According to the invention, rookery and the constructed wetland are combined, waterpower characteristic of the rookery and high efficiency purifying function of constructed wetland on sewage are used, so that ecological features and ornamental value of rookery can be enriched, landscape water body can be effectively purified, and ecological environment benefit of the rookery can be increased.