采用微量中和试验法,对临床拟诊的病毒性心肌炎患者58例和正常青年学生20例,检测柯萨奇B 组病毒中和抗体效价。结果病毒性心肝炎组抗体效价呈4倍上升者18例,单份血效价≥1:320者10例,总阳性率为48.3%。而正常人组仅1例阳性。说明检测病毒中和抗体效价对诊断病毒性心肌炎有参考价值。 58 patients with viral myocarditis and 20 normal young students who were clinically diagnosed were tested for the neutralizing antibody titer of coxsackie B by using the method of micro-neutralization. Results In the group of viral hepatitis and hepatitis, the antibody titer was increased by 4 times in 18 cases. In 10 cases with single blood titer ≥1: 320, the total positive rate was 48.3%. The normal group only 1 positive. Description detection of virus neutralizing antibody titer for the diagnosis of viral myocarditis have reference value.