Abstract:The study analyzed the features of some community structure, and evaluated ecological environmental quality of macrozoobenthos with Shannon-Wienener(H') diversity index, multivariate AMBI index and M-AMBI index according to the sample and environmental material of macrozoobenthos that were collected in offshore area of Northern Fujian in spring in 2016.The results showed it appeared 8 categories and 62 species of macrozoobenthos totally.The species composition was subject to annelid worm(34 species) and mollusc(10 species).The dominant species were Turritella bacillum,Sternaspis scutata,Aglaophamus dibranchis,Protankyra bidentata. Species and densty of macrozoobenthos were low, and miniaturization and low quality appeared. The level of ecological community was subject to sensitive species(EGⅠ), inertia species(EGⅡ), tolerance species(EGⅢ)and the second opportunity species(EGⅣ) of macrozoobenthos. Bottom-dwelling environment was an important factor to affected the ecological quality and community structure of macrozoobenthos.According to the evaluating result of H', AMBI and M-AMBI,diversified index of macrozoobenthos in offshore area of Northern Fujian is low, and environmental quality were in good, medium and weak status, and the evaluating results of these three indexes to macrozoobenthos in offshore area of Northern Fujian were not accordance completely.According to the investigation data and features of community structure, the rationality of the evaluating result of H' and M-AMBI index was higher than AMBI index.