Macroalgae often grow intensively and are widely distributed on the reef surface in the intertidal zone, forming an intertidal seaweed bed. It is an important part of nearshore marine ecosystem, and plays an important ecological role in maintaining marine biodiversity, ourifying water quality and providing primary productivity of nearshoe ecosystem. Spatial heterogeneity, can describe the ununiformity and stability of the spatial pattern of seaweed community, and is an important characterastic index of community ecosystems. Exploring the spatial heterogeneity of macroalgae in the intertidal zone has an important guiding significance for understanding the spatial distribution characteristics, species diversity and productivity assessment of macroalgae communities individuals. In addition, it can describe the horizantal spatial distribution of each species accurately, and quantitatively, and reveal the species composition, succession driving force and dynamic change trend of community patches..