血孢子虫病是奶牛的一种常见疾病,该病主要是由牛双芽巴贝斯焦虫、牛巴贝斯焦虫、牛环形泰勒焦虫和边虫四种寄生虫感染导致的。患病奶牛主要表现为体温升高、黄疸、生产性能下降以及贫血等症状,对我国奶牛养殖业危害较大。本文就奶牛血孢子虫病的病原、临床症状、诊断治疗等方面进行论述,以加强奶牛场的饲养管理,加强营养供给,做好寄生虫的驱杀工作,降低该病的发生率和养殖场（户）的经济损失,为奶牛健康养殖提供理论基础。

Hemosporidiosis is a common disease in dairy cows. The disease is mainly caused by the infection of four parasites：Babesia bovis,Babesia bovis,Taylor sphaerocephalus and Pseudomonas. Sick cows are mainly manifested by symptoms such as increased body temperature,jaundice,decreased production performance and anemia,which are more harmful to the dairy farming industry. This article mainly summarized the pathogen,clinical symptoms,diagnosis and treatment of hemosporidiosis in dairy cows,in order to strengthen the feeding and management,regular sterilizion of dairy farms,reduce the occurrence of this disease and economic losses,provide a theoretical basis for dairy healthy breeding.