随着河蟹养殖业的发展 ,河蟹的病害问题显得越来越突出 ,不但导致河蟹商品率下降 ,而且能造成大面积死亡 ,给养蟹业带来巨大的经济损失。其中以河蟹颤抖病、纤毛虫病、蜕壳不遂病、水肿病等造成的危害最为严重。笔者对这四种疾病采用预防为主、防治结合的方法进行防治 ,取得了 With the development of crab farming, the problem of crab’s disease becomes more and more prominent, which not only leads to the drop of crab’s commodity rate, but also causes a large area of ​​death and brings huge economic losses to crab industry. Among them, crab trembling disease, ciliates disease, exfoliation, edema disease caused the most serious harm. The author of these four diseases using prevention, prevention and treatment combined with the prevention and treatment, made