小儿百日咳进入痉咳期，治疗比较困难，不易迅速奏效。近年来我们采用美喘清和维生素K联合治疗，效果显著，现小结如下。1．一般资料；我们观察的小儿百日咳共170例，其中男92例，女78例；年龄6个月～12岁，以1～4岁为多，115例，占67．6％。所有病例均有典型的痉挛性咳嗽，伴 Pertussis into spasm cough in children, the treatment is more difficult, not easy to work quickly. In recent years, we use the United States Qingqing and vitamin K combination therapy, the effect is significant, are summarized as follows. 1. General information; we observed a total of 170 cases of pertussis in children, including 92 males and 78 females; aged 6 months to 12 years old, aged 1 to 4 years, 115 cases, accounting for 67.6%. All cases have a typical spasmodic cough, accompanied