滤食性鱼类由于当年投放网箱的鱼种达不到商品鱼规格,需越冬后继续养殖。但近年来网箱鱼种经越冬后发生大量死亡,给养殖户造成严重损失。笔者对蒙阴县云蒙湖（岸堤水库）滤食性鱼类网箱越冬死亡现象进行了调查,对死亡原因进行了分析,并提出了相应的防治措施。 Filtration fish due to cage fish that year can not reach the specifications of fish, need to continue breeding after the winter. However, in recent years, a large number of cage fish species have died after the winter, causing severe losses to farmers. The authors investigated the phenomenon of overwintering death of filter-fish nets in Yunmeng Lake (bank embankment reservoir) in Mengyin County, analyzed the causes of death and put forward corresponding prevention measures.