Based on macrobenthic samples collected from 13 stations around Zhangzi Island in northern Yellow Sea with 4 cruises in August, November of 2009 and February, June of 2010, the community structure and seasonal variation of macrobenthos from the research area were analyzed with dominant species analysis, Bray-Curtis similarity cluster analysis, MDS ordination analyses, and ABC curves. The results show that, 211 macrobenthic species in total were identified from the research area; five dominent species were found, i.e., Thyasira tokunagai (Mollusca), Goniada maculate (Polychaeta), Ophiopholis mirabilis (Echinodermata), Ampelisca bocki (Crustacea), and Ampelisca brevicornis (Crustacea), the compositions of dominant species were different among seasons; three macrobenthic sub-communities were determined: I--Ampelisca miharaensis-Ampelisca brevicornis-Goniada maculata sub-community located in northern research area, II--Ophiopholis mirabilis-Amphioplus japonicus sub-community located near Zhangzi Island, III--Thyasira tokunagai-Ophiura sarsii vadicola sub-community located in southern research area, the structure of the three sub-communities changed seasonally; the environment of the area was good, the community was disturbed slightly, the disturbance in summer was slighter than those of the other seasons.