荆门市属山丘型血吸虫病流行区，经过35年的积极防治，于199o年达到消灭血吸虫病标准。转入监测以后，工作中出现了难点，现分析如下并提出相应对策。1当前血防监测工作的难点1．1残存钉螺查、灾难度大残存钉螺呈孤立分散，面积小，密度低，隐蔽性强，不易发现。加上水位不易控 Jingmen is a hill-type schistosomiasis endemic area, after 35 years of active prevention and control, in 199o reached the standard of eliminating schistosomiasis. After the transfer into the monitoring, there were difficulties in the work. The analysis is as follows and the corresponding countermeasures are put forward. 1 current difficulties in blood monitoring monitoring 1.1 survivor snail check, disaster disastrous snail scattered isolated, small area, low density, strong concealment, not easy to find. With the water level is not easy to control