内服法又称药饵法，是预防和治疗蟹病的常用方法。根据河蟹的病情，把相应的药物拌于饲料中，药物随着河蟹对饲料的摄食进入蟹体内，从而在体内发挥作用。此法对体内的寄生虫和细菌感染及保健有较好的效果。采取药饵法防止蟹病应注意以下几点： １、选用药物的原则。河蟹药物的 Oral administration, also known as bait method, is a common method of prevention and treatment of crab disease. According to the crab’s condition, the corresponding drugs mixed in the feed, the drug crab feed into the crab with the body, which play a role in the body. This method on the body of parasites and bacterial infections and health have a better effect. Adopt bait method to prevent crab disease should pay attention to the following points: 1, the principle of selection of drugs. River crab drugs