The invention discloses a suaeda salsa community construction method. The method comprises ditch excavation, soil surface leveling, seed sowing, water and salt regulation, and community impurity clearing, wherein large area shallow surface water flow management is used for the ditch excavation; and seed selection is used a soil salt content of 1.2% as a demarcation point, wherein when the soil salt content is greater than or equal to 1.2%, seeds with glumes are selected, and when the soil salt content is less than 1.2%, seeds without glumes are selected. The construction method has the advantage of constructing a ''landscape'' suaeda salsa community on mudflat heavy salt soils, and meanwhile, repairing a tidal flat wetland, improving biodiversity, and constructing a human landscape.