依据2004～2010年对广西合浦廉州湾增养殖区水质连续调查监测结果,选择高锰酸盐指数(CODMn)、无机氮(DIN)、活性磷酸盐(DIP)3个代表性指标作为评价因子,采用Danniel趋势检验的Spearman秩相关系数法对该增养殖区水质状况变化趋势进行研究分析。结果表明,合浦廉州湾增养殖区水质CODMn、DIP含量保持较平稳状态,而DIN含量则呈上升趋势。削减、控制外源性氮源施入仍然是今后环境治理工作的主要任务。 According to the results of continuous monitoring and survey on the water quality in Lianzhou Bay of Hepu, Guangxi Province from 2004 to 2010, three representative indexes of permanganate index (CODMn), inorganic nitrogen (DIN) and active phosphate (DIP) were selected as evaluation factors , The Spearman rank correlation coefficient method of Danniel’s trend test was used to study the trend of the water quality in the aquaculture zone. The results showed that the content of CODMn and DIP in Lianzheng Bay of Hepu remained relatively stable while the content of DIN increased. Reducing and controlling the application of exogenous nitrogen sources is still the main task of environmental management in the future.