Mangrove forest soil samples was collected from different location. Before starting the experiment, soil pH and Ec are analysed. The medium used for the cultivation of fungi is Czapek Dox broth medium. Two different methods are used for the extraction of humic acid from fungi culture medium, such as shakeflask method and respirometer method. Results from microbial status production of biosolubilized product humic acid fungi gives high amount compare to bacteria and actinomycetes. Hence fungi gave best result for biosolubilization of lignite to humic acid. In addition to mictobial status the physio-chemical parameters, such as N, P, K, Na and organic carbon of soil was analysed.