目的探讨慢性持续咳嗽患者血冷凝集试验检查结果,以此来了解这些患者中支原体感染的状况。方法对全部患者进行血冷凝集试验检测。结果326例中,效价≥1∶64者有101例,其中男性54例,女性47例,≤40岁79例,≥41岁22例。101例中有35例发生哮喘。结论支原体感染可引起慢性持续咳嗽,好发于年轻人,男女比例相仿,可诱发哮喘。 Objective To investigate the results of blood coagulation test in patients with chronic persistent cough to understand the status of mycoplasma infection in these patients. Methods Blood coagulation tests were performed on all patients. Results In 326 cases, there were 101 cases with titers≥1: 64, including 54 males, 47 females, 79 ≤40 years and 22 cases ≥41 years. Thirty-five of 101 patients developed asthma. Conclusion Mycoplasma infection can cause chronic persistent cough, occurs in young people, the proportion of men and women are similar, can induce asthma.