本文报道了一种纤毛虫──旋毛蟹栖拟阿脑虫引起中国对虾越冬亲虾疾病的病理组织变化。试验结果表明：拟阿脑虫从对虾体表甲壳损伤处侵入虾体内,寄生于血淋巴,吞噬血细胞、大量繁殖并随血液循环到达组织器官,纤毛虫对组织尤其是鳃组织造成严重机械损伤而使组织变性、坏死,导致对虾呼吸困难,贫血、窒息,死亡。 In this paper, we report the changes of the pathological tissues of the overwintering parent shrimp in Penaeus chinensis, a ciliates-circulated crab-like organism. The results showed that the parasites on shrimp body shell damage caused by parasites in the hemolymph, phagocytosis of blood cells, a large number of reproduction and with the blood circulation to the tissues and organs, ciliates on the tissue especially the gill tissue causing serious mechanical damage and Denaturation, necrosis of the tissue, resulting in respiratory difficulties in shrimp, anemia, suffocation, death.