Abstract: The investigation of marine fouling assemblages on concrete test panels in nearshore waters in the northeast of Putian was conducted from June 2017 to May 2018. A total of 94 species of fouling organisms belonging to 11 phyla were identified. The fouling organisms were mainly composed of coastal and warm water affinities and reflected distinct characteristics of subtropical embayment community. The dominant species were Amphibalanus reticulates and other major species included Perna viridis, Ectopleura crocea, Anthopleura nigrescens, Anthopleura sp., Lepidonotus tenuisetosus, Magallana angulate, Balanus trigonus, Stenothoe gallensis, Jassa falacata, Caprella equilibra, Caprella scaura, Biflustra grandicella, etc. The adhesive strength of the fouling organisms was the highest in spring. Its thickness, area, density and biomass colonized were 25 mm, 100%, 65 713 ind./m2 and 1 735.1 g/m2, respectively. Then it was followed by summer, autumn and winter. The adhesion strength in the first half of the year was significantly higher than that in the second half of the year. The vertical distribution of adhesion strength was not obvious. The main difference was that some alga adhered to the surface layer, while there was almost no algae found on the bottom layer.