在投食正常、水质良好、生态环境适宜的情况下，河蟹死亡的主要原因是“蜕壳不遂”。一些养蟹能手使用蜕壳箱可有效地防止河蟹蜕壳期死亡，其具体做法是：每天晚上10：00或凌晨4：00左右巡塘，将爬在岸边不动或静伏在水草上不想吃食的河蟹捉住，放在特制的蜕壳箱内蜕壳，刚蜕壳的软壳蟹也可捉来，让其 In the normal feeding, water quality is good, the ecological environment is appropriate, the main reason for the death of crab is “extinction.” Some crab experts to use molt shell boxes can effectively prevent the crab molt death, the specific practices are: every night at 10:00 or 4:00 am Xuntang, will climb in the shore or static on the water on the grass Crabs do not want to eat to catch, put in a special shell molt shell molt, shell molt shell crab just snapped, let it