反复呼吸道感染是严重危害小儿身心健康、影响小儿生长发育的疾病之一。 1997～ 1999年 ,我们对门诊遇到的 96例典型反复呼吸道感染的儿童 ,用 P-转移因子加硫酸锌糖浆防止发作 ,并设同期对照组 90例进行比较 ,现报告如下。1　一般资料观察组 96例中 ,男 49例 ,女 47例 ;年龄 1 Repeated respiratory tract infection is seriously endanger the physical and mental health of children, affecting one of the diseases of children’s growth and development. 1997 to 1999, we encountered 96 cases of typical recurrent respiratory tract infection in children, the use of P-transfer factor plus zinc sulfate syrup to prevent the attack, and set the same period the control group of 90 patients were compared, are as follows. 1 General Information 96 cases of observation group, 49 males and 47 females;