Abstract: Based on our preliminary PCBs removing results, four dominant marine fungi, HTTD-Z0901, HTTD-Z0902, HTTD-Z0903 and HTTD-Z0904, were selected from Jiaozhou Bay sediments to study the growth characters under different culture mediums, pH values and aerobic, anaerobic conditions in order to ensure whether or not marine Penicillium fungi may undergo aerobic-anaerobic degradation. The results showed that the four marine fungi preferred MMM culture medium in which super pure water was replaced by sea water. And the four marine fungi all grew well at the pH value from 6 to 8, whereas alkaline condition was probably more appropriated. By biomass measurement, the four fungi could form colonies under aerobic, anaerobic conditions, and the growth of the four fungi in anaerobic condition were slower than those in aerobic condition. In conclusion, the growth characters of four fungi reflect the features of its original marine sources, and the four marine fungi may become a candidate in aerobic-anaerobic bioremediation.